A 2.4 mm season
You have a head stamped 2.4 mm that will pass a five-edge line, and you will use most of a long reel. The 90 m star, part 104883E, has 4.5 from 1,447 on this listing. A 15 m star doughnut is only a trial of the same profile.
Oregon trimmer line comparison 2026
The best Oregon trimmer lines, compared.
Top pick: Oregon Round 2.0 (127 m) Best value: Oregon Round 2.0 (127 m) – Lowest price per stated metre in this set, for a head stamped about 2.0 mm. Updated 23 October 2026.
Oregon trimmer line is replacement nylon cord for a grass trimmer or brushcutter you already own. It is not a machine, and it is not one diameter. You match the maximum marked on the head, and whether the eyelet will feed the profile, before you match a logo. UK packs run from a thin doughnut in the 1.6 mm class to serrated cord around 4 mm, in round, star and dual-material round. A short doughnut is a trial. A longer reel suits a season only if you will finish it. Round line is the simple cut. Star line has five edges and can be harder to wind. Serrated line is sold for denser growth, and it stops where the manual's blade starts. No British Standard on the spool replaces the head stamp. For paid work, the Health and Safety at Work etc. Act 1974 and PUWER 1998 apply to the machine and the person, not to the nylon. Our [Oregon trimmer line buying guide](/hub/lawn-and-garden-equipment/oregon-trimmer-line/sub/oregon-trimmer-line-buying-guide) puts diameter, profile and length in that order.
Oregon trimmer line is replacement nylon cord for a grass trimmer or brushcutter you already own. It is not a machine, and it is not one diameter.
38 products checked · 67 hrs invested · +24,300 readers
11 of 11: Best Oregon trimmer lines compared
Swipe for more
1-2 of 11Best overall
7.2/10
6.5/10
8.8/10
6.0/10
7.1/10
6.6/10
6.9/10
5.9/10
5.6/10
5.7/10
6.4/10
∼ £16
∼ £25
∼ £26
∼ £9
∼ £36
∼ £8
∼ £38
∼ £17
∼ £8
∼ £6
∼ £28
4.6(4,712)
4.6(4,712)
4.5(1,447)
4.5(1,102)
4.5(952)
4.4(4,811)
4.4(754)
4.3(14,157)
4.3(14,157)
4.3(14,156)
4.3(1,986)
Personal buying guide
Which Oregon trimmer line fits?
Question 1 of 2
What diameter is stamped on the head?
The best Oregon trimmer lines in detail
Our view
This yellow round reel is 2.0 mm by 127 m at £16.07, about 13p a metre on the stated length, the lowest rate in the set. The listing shows 4.6 from 4,712, and the same figure and the same UK review text sit on the 3.5 mm reel. Praise in that shared block covers strength and a soak. Criticism includes easy breakage and a cord that was too thick. You cannot tell which diameter those sentences describe. It is the best-value pick when the head wants 2.0 mm round and you will use a long reel. It is the wrong reel if the head is stamped 2.4 mm or above.
Pros
- 2.0 mm by 127 m at £16.07 in the saved listing
- About 13p per stated metre, the lowest rate in this set
- A long yellow round reel rather than a 15 m trial
Cons
- 4.6 from 4,712 is shared with the 3.5 mm listing
- The shared text includes breakage and a too-thick complaint
- The 360 g cell is also on the much thicker 3.5 mm file
Best for: Your head is stamped about 2.0 mm and you trim often enough to finish a long reel.
Less suitable: You need 2.4 mm or thicker, or you want stars that belong only to this length.
Specifications
- Model
- Oregon Round 2.0 (127 m)
- Brand
- Oregon
- Price
- ∼£16
- Customer rating
- 4.6/5(4,712)
- Profile
- Round
- Diameter
- 2.0 mm
- Length
- 127 m
- Family
- Round copolymer
- Part
- 69-358-Y
- Review pool
- Shared pool
- Colour
- Yellow
Common questions
What diameter and length does the listing state?
The title states round line at 2.0 mm by 127 m. The model number is 69-358-Y. The item-diameter field says 2 millimetres and the length field says 127 metres.
Can the star rating be read as this reel alone?
The saved listing shows 4.6 from 4,712. The same count and the same UK review text are on the 3.5 mm ASIN B07RS4VPWY. Do not treat the number as a separate test of 2.0 mm.
Our view
This is yellow round line, 3.5 mm by 124 m, at £24.65. The stars are 4.6 from 4,712 and the UK reviews match the 2.0 mm by 127 m file, including a review that names 2.0 mm. One text says the cord was too thick for that petrol trimmer, which is what you would expect if 3.5 mm met a smaller head, but the shared file does not prove which ASIN that buyer held. Buy it only when the manual allows about 3.5 mm. Do not buy it because the star line looks better than the cheaper 2.0 mm reel.
Pros
- 3.5 mm by 124 m stated on the title
- £24.65 for a long reel if the head can take it
- Diameter field says 3.5 millimetres
Cons
- Review text and star count are shared with the 2.0 mm ASIN
- Too thick for many domestic heads
- 360 g weight cell matches the lighter 2.0 mm file and is not credible for both
Best for: The manual allows about 3.5 mm round line and you want a long yellow reel.
Less suitable: The head is 2.4 mm or under, or you are choosing on the 4.6 score alone.
Specifications
- Model
- Oregon Round 3.5 (124 m)
- Brand
- Oregon
- Price
- ∼£25
- Customer rating
- 4.6/5(4,712)
- Profile
- Round
- Diameter
- 3.5 mm
- Length
- 124 m
- Family
- Round copolymer
- Part
- 69-377-Y
- Review pool
- Shared pool
- Colour
- Yellow
Common questions
Will 3.5 mm fit a normal cordless trimmer?
Only if that head is marked for about 3.5 mm. Most cordless heads in the 1.6–2.0 mm class will not take it. The listing’s universal-fit bullet does not override the head.
Is the 4.6 score only for this 3.5 mm reel?
No. The saved listing matches the 2.0 mm ASIN B07RT72FHR on 4.6 from 4,712 and on the UK review text.
Our view
The 90 m star, part 104883E, is £25.76 with 4.5 from 1,447 reviews that sit on this listing. UK texts describe tall brush and brambles on petrol trimmers, and one says the cut was cleaner and the machine louder. The same file includes snaps on nettles and melting in a bump head. Oregon’s page for this part describes five edges and aluminium particles that resist welding. The amazon weight cell says 60 g, which does not match a 90 m coil, so do not plan from that cell. In this set it is the top pick when the head is stamped 2.4 mm and will pass a star. Leave it if the head is 1.6 mm.
Pros
- 2.4 mm star by 90 m, part 104883E, title and Oregon’s GB page agree
- £25.76 in the saved listing, 4.5 from 1,447 on this listing
- Reviewers report thick grass, nettles and brambles
Cons
- UK reports of melting in a bump head and snaps on nettles
- One reviewer found it substantially louder
- The 60 g weight cell is not a credible coil weight
Best for: You have a petrol head stamped 2.4 mm that will take a five-edge line, and you will use most of 90 m.
Less suitable: The head is 1.6 mm or 2.0 mm, or you only want a quiet round line for lawn edges.
Specifications
- Model
- Oregon Star 2.4 (90 m)
- Brand
- Oregon
- Price
- ∼£26
- Customer rating
- 4.5/5(1,447)
- Profile
- Star
- Diameter
- 2.4 mm
- Length
- 90 m
- Family
- Nylium star
- Part
- 104883E
- Review pool
- This listing
- Colour
- Black
Common questions
What diameter and length does the listing state?
The title states star line at 2.4 mm by 90 m. The model number is 104883E. Amazon’s power-source and rpm cells are not line specifications.
What do the captured UK reviews say about noise and breakage?
One UK review says the cut was cleaner and the trimmer substantially louder. Other texts say it snaps on nettles or melts inside a bump head.
Our view
The title says round 1.65 mm by 15 m and the size field says 1.6 mm by 15 m, part 800001, at £8.69, with 4.5 from 1,102. Bullets claim a longer run and less noise. UK reviews both praise it against the original cord and say it snaps on a small electric or feels too soft on a cordless. It is the only light-gauge Oregon doughnut in this set. Buy it for a head stamped about 1.6 mm. Do not buy it to quieten a 2.4 mm petrol machine.
Pros
- The only 1.6 mm-class Oregon doughnut in this set
- £8.69 for 15 m
- Included-components line states 1.6 mm by 15 m
Cons
- Title says 1.65 mm and the size field says 1.6 mm
- Breakage reports, including after a soak
- Noise and runtime percentages are untested bullets
Best for: Your cordless or electric head is stamped about 1.6 mm and you want a short Oregon refill.
Less suitable: The head is 2.4 mm or you are buying the 10 percent noise claim.
Specifications
- Model
- Oregon Round 1.6 (15 m)
- Brand
- Oregon
- Price
- ∼£9
- Customer rating
- 4.5/5(1,102)
- Profile
- Round
- Diameter
- 1.6 mm
- Length
- 15 m
- Family
- Thin round
- Part
- 800001
- Review pool
- This listing
- Colour
- Black
Common questions
Is it 1.65 mm or 1.6 mm?
The title says 1.65 mm by 15 m. The size field and the included-components line say 1.6 mm by 15 m. Treat it as 1.6 mm class and check the head.
Does the listing prove it is quieter?
The bullets say up to 10 percent less noise and up to 25 percent longer run time. This comparison did not measure either figure.
Our view
Part 106504E is round dual-material line, 3.0 mm by 120 m, at £36.47, with 4.5 from 952. Bullets describe an anti-weld skin and a carbon-loaded core, and they claim up to 30 percent more durability. Reviews that say Duoline talk about bracken and less fusing. Other reviews say it snaps on wet grass, or they describe a different length. Use it when the head allows 3.0 mm and welding has been the failure. Skip it on a 1.6 mm or 2.0 mm spool, and do not treat the percentage as a test.
Pros
- 3.0 mm by 120 m, part 106504E, dual-material bullets
- Reviews that name Duoline report less fusing and heavy vegetation
- 1.14 kg in the saved listing, closer to a long 3 mm reel than the 60 g cells
Cons
- £36.47 is the second-highest shelf price in the set
- Snap reports, including wet grass, sit in the same file
- At least one review describes 2.4 mm by 180 m
Best for: The head allows 3.0 mm and ordinary line has been welding in the spool.
Less suitable: You need a short trial doughnut, or the head is under 2.4 mm.
Specifications
- Model
- Oregon Round 3.0 (120 m)
- Brand
- Oregon
- Price
- ∼£36
- Customer rating
- 4.5/5(952)
- Profile
- Round
- Diameter
- 3.0 mm
- Length
- 120 m
- Family
- Dual-material
- Part
- 106504E
- Review pool
- This listing
- Colour
- Multi
Common questions
What is the line made of, according to the listing?
The bullets say an anti-weld surface and a carbon-loaded core. They also say up to 30 percent more durable than standard round line. That percentage is a claim.
What length should you trust?
The title says 3.0 mm by 120 m and the model is 106504E. A review headed 2.4 mm by 180 m does not change the title.
Our view
Part 110985E is a 15 m star doughnut at 2.4 mm, £7.89, with 4.4 from 4,811. An allotment review describes a long life. Another says the whole coil went in about ten minutes. Some texts describe a square section or a thinner gauge. The title stays 2.4 mm star. It is a low-cost way to try five edges if the eyelet will pass them. It is not a season of line, and it is not the 90 m part 104883E.
Pros
- 2.4 mm star by 15 m at £7.89
- Part 110985E
- Some UK users report a long life on grass and a cleaner cut
Cons
- 15 m is gone quickly if it snaps
- Reviews in the file describe other shapes and diameters
- Called no stronger than round line by at least one UK reviewer
Best for: You want a short, cheap trial of 2.4 mm star line and the eyelet will take it.
Less suitable: You trim every week, or a review has convinced you this doughnut is square or 1.6 mm.
Specifications
- Model
- Oregon Star 2.4 (15 m)
- Brand
- Oregon
- Price
- ∼£8
- Customer rating
- 4.4/5(4,811)
- Profile
- Star
- Diameter
- 2.4 mm
- Length
- 15 m
- Family
- Nylium star
- Part
- 110985E
- Review pool
- This listing
- Colour
- Multi
Common questions
Is this the 90 m Nylium star?
No. This listing is 2.4 mm by 15 m, part 110985E, at £7.89. The 90 m doughnut is ASIN B002EOUPVO, part 104883E.
Why do some reviews mention another shape?
The saved listing includes a review that calls the cord square and another that mentions 1.6 mm. The title and the part number say star 2.4 mm. Specs follow the title.
Our view
This is yellow star line, 3.0 mm by 212 m, at £37.60, with 4.4 from 754. The UK sample in the file is short. Praise is a second purchase and a strong reel. Criticism is cord used up on high grass, and melting onto a polycut head on a Stihl 560. Bullets describe five edges and nylon, without the aluminium sentence used on the 2.4 mm star. It suits a head that allows 3.0 mm star and a user who will finish a very long reel. It is a poor buy for a small electric trimmer or a polycut blade head.
Pros
- 3.0 mm star by 212 m, the longest reel in the set
- 1.36 kg, in line with a long coil
- 4.4 from 754 on this ASIN, not the 14,000 pool
Cons
- Highest shelf price at £37.60
- A UK review reports melting on a Stihl 560 polycut head
- Only a short run of UK reviews in the saved listing
Best for: The head allows 3.0 mm star line and you strim enough ground to use 212 m.
Less suitable: You have a small garden, a 1.6–2.0 mm head, or a polycut head that takes blades.
Specifications
- Model
- Oregon Star 3.0 (212 m)
- Brand
- Oregon
- Price
- ∼£38
- Customer rating
- 4.4/5(754)
- Profile
- Star
- Diameter
- 3.0 mm
- Length
- 212 m
- Family
- Star nylon
- Part
- 69-461-Y
- Review pool
- This listing
- Colour
- Yellow
Common questions
What does the listing state for size?
Star line, 3.0 mm, style 212 m, model 69-461-Y, yellow. The 42 cm cutting width and 5,000 rpm cells are not line specifications.
What went wrong in the UK reviews that are in the file?
One buyer used a lot of cord on high grass. Another reported melting and sticking in a polycut head on a Stihl 560.
Our view
This red round reel is 2.7 mm by 70 m at £16.85, part 69-382-RD. The listing shows 4.3 from 14,157, and the UK reviews match the orange 2.4 mm and yellow 3.0 mm 15 m files. Those texts talk about several thicknesses, snaps on paving, and eyelets that are too small. The title is still a clear 2.7 mm by 70 m. Choose it when the head allows 2.7 mm and you want a mid-length red reel. Do not choose it because fourteen thousand people reviewed this exact spool.
Pros
- 2.7 mm by 70 m stated in the title and the size field
- £16.85, a mid-price reel
- 570 g and about 22.5 x 20 cm, a plausible spool
Cons
- Stars are shared with two 15 m round listings
- Shared reviews describe the wrong thickness for some heads
- Welding-resistance is a bullet, not a measured result
Best for: The head allows 2.7 mm round line and you want about 70 m rather than a 15 m doughnut.
Less suitable: You are buying the 14,157 count, or the head is stamped 1.6 or 2.0 mm.
Specifications
- Model
- Oregon Round 2.7 (70 m)
- Brand
- Oregon
- Price
- ∼£17
- Customer rating
- 4.3/5(14,157)
- Profile
- Round
- Diameter
- 2.7 mm
- Length
- 70 m
- Family
- Round copolymer
- Part
- 69-382-RD
- Review pool
- Shared pool
- Colour
- Red
Common questions
What size is this red reel?
The title and size field say round 2.7 mm by 70 m, red, model 69-382-RD. The 0.11 inch cutting-width cell is not the diameter to plan from. 2.7 mm is the figure in the title.
Do the 14,157 reviews describe only this reel?
No. The captured UK text matches the 2.4 mm by 15 m and 3.0 mm by 15 m saved listings, and it mentions more than one thickness.
Our view
This yellow round doughnut is 3.0 mm by 15 m at £7.79, part 69-368-YE. The 4.3 from 14,157 matches the other two round files in the shared pool. A sentence in that pool does mention choosing 3 mm because a thin line wore out, which is at least on-theme, but the rest of the text also talks about 2.4 mm and 1.65 mm. Use this doughnut only as a short trial when the head allows 3.0 mm. For a season at 3 mm, the 120 m dual-material reel or the 212 m star is the length, at a much higher shelf price.
Pros
- 3.0 mm by 15 m yellow, stated in the size field
- £7.79, a short trial if the head allows 3 mm
- Part 69-368-YE
Cons
- Shared 4.3 from about 14,157
- 15 m of thick line disappears quickly on heavy growth
- Not a substitute for the 212 m star or the 120 m dual-material reel
Best for: The head allows 3.0 mm and you want a short yellow round doughnut before you buy a long reel.
Less suitable: The head is under 2.4 mm, or you need metres rather than a sample.
Specifications
- Model
- Oregon Round 3.0 (15 m)
- Brand
- Oregon
- Price
- ∼£8
- Customer rating
- 4.3/5(14,157)
- Profile
- Round
- Diameter
- 3.0 mm
- Length
- 15 m
- Family
- Round copolymer
- Part
- 69-368-YE
- Review pool
- Shared pool
- Colour
- Yellow
Common questions
How is this different from the 212 m star?
This is round 3.0 mm by 15 m at £7.79, part 69-368-YE. The 212 m pack is star line, ASIN B07RWF7F1P, at £37.60. They are not the same reel.
Are the reviews only about 3.0 mm?
No. The UK text matches the 2.4 mm by 15 m and 2.7 mm by 70 m files and mentions more than one thickness.
Our view
The orange round doughnut is 2.4 mm by 15 m at £5.99, part 69-362-OR, the lowest shelf price in the saved listings. It shows 4.3 from 14,156, shared with the red 2.7 mm and yellow 3.0 mm listings. The shared reviews mention several diameters, snaps against paving, and a stiff wind. As a short trial for a head stamped 2.4 mm it is the cheap Oregon round option. It is not evidence that fourteen thousand people finished this 15 m coil, and it will not last a summer of weekly trimming if the line is breaking.
Pros
- £5.99, lowest price in this capture
- Title and size field agree on 2.4 mm by 15 m, orange
- A short doughnut if you only want to try 2.4 mm round
Cons
- 15 m runs out quickly
- 4.3 from 14,156 is a shared pool
- Shared reviews include snaps on hard edges and eyelets that will not take thicker line
Best for: The head is stamped 2.4 mm and you want the cheapest Oregon round doughnut in this set to try.
Less suitable: You trim often, or you think the review count belongs only to this orange coil.
Specifications
- Model
- Oregon Round 2.4 (15 m)
- Brand
- Oregon
- Price
- ∼£6
- Customer rating
- 4.3/5(14,156)
- Profile
- Round
- Diameter
- 2.4 mm
- Length
- 15 m
- Family
- Round copolymer
- Part
- 69-362-OR
- Review pool
- Shared pool
- Colour
- Orange
Common questions
What is the price and length?
£5.99 for round 2.4 mm by 15 m, orange, model 69-362-OR, in the saved listing.
Does the large review count belong to this doughnut?
The file shows 4.3 from 14,156. The same UK review text is on the 2.7 mm by 70 m and 3.0 mm by 15 m files. Do not read it as a test of this 15 m coil alone.
Our view
Part 111085E is serrated nylon, 4.0 mm by 21 m, at £27.57, with 4.3 from 1,986. Reviewers who have the right holder cut brambles and thick grass. Others call it brittle, too stiff to load, or useless in a head that was never meant for 4 mm. A UK tool shop limits this part to Jet-Fit heads 111110 and 111111, which disagrees with the amazon brand list. About £1.31 a stated metre is the dearest rate in the set. It is for a head built for this cord. It is not a way to avoid a metal blade the manual never offered.
Pros
- 4.0 mm serrated by 21 m, part 111085E
- Reviews name brambles and scrub when the head matches
- 450 g, a plausible weight for a short thick coil
Cons
- £27.57 for 21 m
- Stiff, and brittle after soaking in several UK reviews
- A retailer limits it to named Jet-Fit heads
Best for: You already run a Jet-Fit or other head specified for 4 mm serrated line, on thick growth.
Less suitable: You have a domestic bump spool, or you hoped serrated nylon would replace a blade.
Specifications
- Model
- Oregon Serrated 4.0 (21 m)
- Brand
- Oregon
- Price
- ∼£28
- Customer rating
- 4.3/5(1,986)
- Profile
- Serrated
- Diameter
- 4.0 mm
- Length
- 21 m
- Family
- Serrated nylon
- Part
- 111085E
- Review pool
- This listing
- Colour
- Multi
Common questions
Is serrated 4 mm a metal blade?
No. The listing material is nylon. HSE’s brushcutter note treats nylon line and a single-piece metal blade as different tools. This reel does not add a blade the manual omits.
What length and price are in the saved listing?
4.0 mm by 21 m at £27.57. Bullets claim up to 30 percent more durability than standard round line. That figure is not a test in this comparison.
How we compared
Scores use the amazon.co.uk files for these reels only. The star figure is the start, from about 4.3 mapping near 48 up to about 4.6 mapping near 74, then adjusted. An own review pool and a part number that matches the title raise the score. A shared parent star line lowers it, even when the count is large. A title that disagrees with the size field is marked down. Shelf price per stated metre decides the best value pick. It is not part of the score. There was no lab test. RPM, power source and cutting width are ignored.
1
Listing stars
34%The star figure is the starting point, with about 4.3 near a score of 48 and about 4.6 near 74, before any adjustment.
2
Review pool and part match
26%An own review pool and a part number that matches the title raise the score. A shared parent star line lowers it, even when the count is large.
3
Title and size agree
16%The title and the size field should name the same diameter and length. A disagreement, as on the 1.6 mm-class doughnut, is marked down.
4
Profile the head can feed
14%Round, star or serrated only helps if the head is stamped for that diameter and the eyelet will pass the profile. A brand list is not a fit certificate.
5
Stated metres
10%A 15 m doughnut is a trial. A longer reel scores as a season only when the stated length is one you can use. Price per metre is the value test, not this score.
Independent review
Last updated: 23 October 2026
8 sources checked
Oregon trimmer line buying guide
Match the head before the logo. Oregon trimmer line is a refill for a diameter the manual already allows, not a new trimmer. Round cord suits lawn edges. Star and serrated profiles have to pass the eyelet, and serrated nylon still stops where the manual's blade starts. Buy a short doughnut to try a profile, about 70 m to 127 m for a season, and a reel past 200 m only if you will use it. Nylon dries in heat and sun. Stars count only when they belong to that length.
What is Oregon trimmer line?
A reel of trimmer line is nylon cord for a head you already own. You are refilling a worn spool. You are not choosing a new machine. The number stamped on the head, or written in the manual, is the diameter rule. A brand list in a bullet is not a fit certificate. A cordless head supplied at about 1.6 mm will not take 3.5 mm or 4.0 mm, whatever the title calls heavy duty. Match the profile next. Round line is the simple cut and the usual choice for lawn edges.
Best for
- A head already stamped for the diameter on the reel
- A long reel you will finish and store out of the sun
- Thick growth only when the manual allows 3 mm to 4 mm
Not ideal for
- A cordless head supplied with about 1.6 mm if you wanted 3 mm or 4 mm
- Woody scrub that needs the blade and harness in the manual
- A buyer treating a shared star rating as proof of one 15 m doughnut
Mistakes to avoid
- 1
Buying on a heavy-duty title
The head limit comes first. A pack can say heavy duty and still be 3.5 mm or 4.0 mm, which a 1.6 mm cordless head will not take.
- 2
Trusting a universal-fit bullet
A list of machine brands is not a fit certificate. A shop may limit serrated 4 mm line to named heads. Overfilling a bump head locks the feed.
- 3
Reading a shared review pool as one reel
The same star line and the same review text can sit on two diameters, or on three round packs. Do not give about 14,000 reviews to one 15 m colour.
What to weigh up
Head diameter, profile and family
HighThe first check is the maximum diameter on the head or in the manual. A list of machine brands in a bullet is not a fit certificate. A cordless head in the 1.6 mm class will not take 3.5 mm or 4.0 mm,. Once the diameter is allowed, match the profile to the eyelet. Round line is the simple cut and the usual cord for lawn edges. Star line has five edges and is sold for a cleaner cut. It can be harder to wind and harder to feed than round.
Metres and stars tied to one length
HighBuy the metres you will finish, then read the stars only with that length attached. A 15 m doughnut is a trial of the profile. About 70 m to 127 m suits a season of domestic trimming. A reel past 200 m is cheaper per stated metre only if the work will use it. Nylon dries in heat and sun, so store a long reel in the cool. Maker advice for dried monofilament is a 24-hour soak. That soak is not a measured life gain, and it will not make thick line fit a small eyelet.
Which option suits you?
Three typical situations, each with a recommendation from this comparison.
A long 2.0 mm reel
You trim often on a head stamped about 2.0 mm and you want the lowest price per stated metre in this set. The yellow round reel is 127 m at about £16.07. Its 4.6 from 4,712 is shared with the 3.5 mm listing, so read the stars with that limit.
Thick growth
The manual allows about 3 mm to 4 mm and the growth is past ordinary lawn edges. A long 3 mm coil, or the 21 m serrated doughnut, is the range. It stops where the manual's blade starts. A retailer limits part 111085E to named Jet-Fit heads.
Common questions about Oregon trimmer lines
What diameter of trimmer line should you match?
Match the maximum marked on the head or in the manual. A brand list on the pack is not a fit certificate. A cordless head in the 1.6 mm class will not take 3.5 mm or 4.0 mm. Round, star and serrated packs still have to pass that stamp and the eyelet. If the head is only approved around 2.4 mm, the 2.4 mm strimmer line comparison stays on that one diameter across more than one maker.
Should you buy round, star or serrated line?
Round line is the simple cut for lawn edges. Star line has five edges and is sold for a cleaner cut. It can be harder to wind, and a review that calls the cord square does not change a title that says star. Serrated or toothed line is sold for denser growth. It is nylon, not a metal blade. A shop may limit a 4 mm serrated part to named heads. Follow the head, not a universal-fit bullet.
How many metres of trimmer line should you buy?
A 15 m doughnut is a trial of one profile on a head you already know. About 70 m to 127 m suits a season of domestic trimming. A reel around 200 m is cheaper per metre only if you will finish it. Dried monofilament can be soaked for about 24 hours before you wind it. That is maker advice, not a measured gain in life. Buy the length you will use, and keep the rest out of heat and sun.
Should you soak trimmer line before you load it?
Nylon can dry and turn brittle. Maker advice for dried monofilament is a soak of about 24 hours. Treat that as advice. It is not a measured increase in cutting life, and it will not make a thick line fit an eyelet that is too small. Reviews still report snaps after a soak, including on thin round line. Equal tails, and a spool that is not overfilled, matter as much as the water.
Is serrated 4 mm line a metal blade?
No. The listing material is nylon. Official brushcutter guidance treats nylon line and a single-piece metal blade as different tools. Serrated line does not add a blade the manual omits. A UK tool shop limits one 4.0 mm by 21 m serrated part to Jet-Fit heads 111110 and 111111, which is narrower than a brand list on a listing. If the growth is woody, use the blade and harness the manual pairs, or stop.
Why can two reels share one star rating?
Two different lengths can show the same stars and the same review text. In these amazon.co.uk files, 2.0 mm by 127 m and 3.5 mm by 124 m both show 4.6 from 4,712. Three round packs share about 4.3 from roughly 14,000 reviews. Do not give that pool to one colour or one length. A part number that matches the title is the check. Price per stated metre is a value test, not proof the shared stars belong to one reel.
Which listing cells should you ignore?
Ignore RPM, power source and a cutting width in centimetres. Those describe a machine, not a spool. A weight of 60 g on a 90 m coil is not a credible mass for the line, and two long yellow reels can print the same 360 g. Do not calculate density from those cells. Phrases such as "up to 10%" less noise or "up to 30%" more durable are bullets. This comparison did not measure them.
When should you stop and get help?
Stop if the head or guard is cracked, or if the machine smokes or vibrates with the correct cord and equal tails. Woody growth needs the blade and harness the manual pairs, not a thicker nylon you hoped would cope. Paid work needs someone with trimmer training under PUWER 1998. A nest in use is protected. A reel that is not as described is a point under the Consumer Rights Act 2015. Line diameter does not set a legal working hour.
Our verdict
The top pick is the star line at 2.4 mm by 90 m, part 104883E. It leads because 4.5 from 1,447 sits on this listing and the title matches the maker's GB page for that part. That is not a lab cut. Leave it if the head is 1.6 mm or will not pass five edges. Best value is the round 2.0 mm by 127 m reel, the lowest price per stated metre in this set. Its 4.6 from 4,712 is shared with the 3.5 mm listing, so the mark is the shelf rate, not a separate test of 2.0 mm.
Best valueView offer
Oregon Round 2.0 (127 m)
Lowest price per stated metre in this set, for a head stamped about 2.0 mm.
Editorial
Editor, DIY & tools
Lawn and garden equipmentStrimmers and brushcuttersamazon.co.uk product listings
Peter F. is the editor for DIY & tools at productscompared.co.uk. Comparisons in this category are checked against amazon.co.uk listings, review evidence and public UK sources.
Updated: 23 October 2026
8 sources checked
Guides to Oregon trimmer lines
Guides on what to look for, how to use a product, and common mistakes.
Oregon trimmer line buying guideDiameter, family and metres before the logo.Best Oregon trimmer lineOne pack for a small lawn, a long reel, or rough growth, and who should skip it.How to load Oregon trimmer lineWinding, equal tails, a 24-hour soak, and the guard knife.Star or round Oregon trimmer lineRound, star, or a serrated profile at a diameter the head allows.Oregon trimmer line for thick weedsWhen 3 mm to 4 mm stops and the manual's blade starts.
Related comparisons
Sources
Shelf prices, star ratings and review counts are the amazon.co.uk figures in the listing files for this comparison. The other pages are maker notes and UK safety sources on profile, soak advice and brushcutter guidance.
- Oregon catalogue profile map (retrieved 23 October 2026)
- Oregon UK Nylium Star 2.4 mm 90 m (retrieved 23 October 2026)
- Oregon Gatorline soak note (retrieved 23 October 2026)
- Screwfix Oregon Nylium Silencio 2.4 mm x 87 m (retrieved 23 October 2026)
- DW Tool Shop Oregon 111085E (retrieved 23 October 2026)
- HSE brushcutters and strimmers (retrieved 23 October 2026)
- STIHL UK grass trimmer PPE (retrieved 23 October 2026)
- amazon.co.uk listings for these reels (retrieved 23 October 2026)
This page contains affiliate links to amazon.co.uk. If you buy through them, we may earn a commission at no extra cost to you. The comparison uses captured listings and public UK sources. We did not run a lab test.