The best 125 mm variable speed angle grinders, compared.
Top pick: POSENPRO 1200W 125 mm corded angle grinder – 1,200 W, 230 V and M14 are stated, with a printed 3,000–12,000 rpm range, at about £33.99. Best value: TEENO 1000W variable speed angle grinder – About £32.99, with M14, a range from 2,000 rpm, and its own 4.2 from 143 reviews. Voltage is not stated. Updated October 2026.
A 125 mm variable speed angle grinder is a hand-held disc tool, often called a 5 inch grinder, whose spindle speed can be set below its maximum. You buy one to cut and grind metal, and to flap-sand, wire-brush or polish at a lower rpm. The disc class should be 125 mm. A title that also says 115 mm is a size conflict, and a 230 mm machine is a different job. Look for a printed speed range with numbers. The disc's marked maximum rpm must be at least the tool's maximum. Many 125 mm wheels are marked 12,200 rpm or 80 m/s. Do not fit a wheel the machine can outrun, and do not remove the guard. The usual spindle thread is M14 and the usual bore is 22.23 mm. Corded tools in this size are often around 1,000–1,200 W with a BS 1363 plug. On a UK site, public guidance points to a cordless tool or 110 V centre-tapped-to-earth. The order of those checks is in the [125 mm variable speed angle grinder buying guide](/hub/tools/125mm-variable-speed-angle-grinder/sub/125mm-variable-speed-angle-grinder-buying-guide).
A 125 mm variable speed angle grinder is a hand-held disc tool, often called a 5 inch grinder, whose spindle speed can be set below its maximum.
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Personal buying guide
Question 1 of 2
Where will you use it?
The POSENPRO PPAG1200/125 is the corded listing to cite when you want M14 written on the page: £33.99, 1200 W, 230 V, six steps and 3000–12000 rpm. The specification weight is 2.51 kg and a bullet says 1.8 kg net, so you should not plan how you carry it on either figure alone. amazon.co.uk shows 4.2 from 160 reviews, and that block is the same text as the 1100 W POSENPRO file, including switches that fail and motors that slow under pressure. Disc contents are contested in the same way, with a grinding wheel named in one field and omitted from the short bullet. Best Sellers Rank matches the other POSENPRO line, so the rank is not a second proof of demand. It is the top pick in this set because voltage, a printed range and M14 are all stated at the same shelf price as the twin, not because the stars are a lab result.
Pros
Cons
Best for: A home 125 mm dial grinder on a UK 13 A socket when you want M14 printed on the listing.
Less suitable: You need an independent review pile, one agreed weight, or a tool for 110 V site work.
Specifications
Common questions
How is this 1200 W POSENPRO different from the 1100 W listing?
The specification line says 1200 W, M14, and 2.51 kg, with dimensions 34 x 14.5 x 12 cm. A bullet also says 1.8 kg net. The review text matches the 1100 W file.
What speed range is printed?
3000–12000 rpm in six steps, on a 230 V AC corded tool listed at £33.99.
Does the listing confirm a disc in the box?
No single answer. Included Components names one grinding wheel. The shorter bullet does not.
The POSENPRO PPAG1100/125 is a corded 1100 W, 230 V grinder at £33.99, with a printed range of 3000–12000 rpm in six steps and a listed weight of 2.2 kg. The 160 amazon.co.uk reviews are the same block as the 1200 W POSENPRO listing, so the 4.2 is one sample, not two. Reviewers use the dial for sheet metal, paint and wire wheels, and some mention a soft start on short jobs. The same text describes switches that fail and motors that slow under pressure, and one report says the tool arrived without a UK plug. M14 is not stated, only a raised spindle lock, so you cannot assume a standard disc nut from this page. Disc contents conflict: one bullet lists the grinder, handle, spanner, manual and two carbon brushes, while Included Components also names a grinding wheel.
Pros
Cons
Best for: Home cuts on a 230 V socket when you will check the plug and buy a disc marked for at least 12000 rpm.
Less suitable: You need M14 on the listing, a confirmed disc in the box, or a review sample that is not shared with another ASIN.
Specifications
Common questions
Does this POSENPRO listing state a variable speed range?
Yes. The listing records 3000–12000 rpm and six speed steps on the 1100 W, 230 V corded tool.
Is a cutting disc included?
The box contents are contested. One bullet omits a disc. The Included Components field names a tool-free grinding wheel.
Is the spindle thread given as M14?
No. The listing mentions a raised spindle lock and does not state M14.
TEENO T81-08CKG is £32.99 for a corded 1000 W body whose listing prints 2000–12000 rpm in six steps, M14, and a title that includes four 125 mm discs. That low end is the widest in the corded set, which matters if you want room under full speed for a flap disc. Weight is 2.43 kg, a bullet gives a 2 m cable, and mains voltage is not in the specification block, so you still confirm a BS 1363 plug on the live page. amazon.co.uk shows 4.2 from 143 reviews, but most of the 50 blocks in the file are not UK text. Those texts describe a switch that locks on, fails to stop until it is cycled, or starts by itself. Handle count also conflicts between two handles and one. It is the best value here on price, a stated M14 and its own review count, with the voltage gap and the switch texts as the limit.
Pros
Cons
Best for: A budget corded dial when you will confirm the plug and you want a range that starts at 2000 rpm.
Less suitable: You need voltage printed on the listing, or you would keep cutting if a switch stayed on.
Specifications
Common questions
How low does the stated speed go?
The listing prints 2000–12000 rpm and six steps on a 1000 W corded grinder. Mains voltage is not stated.
What spindle does the listing name?
M14, with a spindle button lock claimed. Weight is 2.43 kg and a bullet gives a 2 m cable.
What do the reviews say about the switch?
Review text describes a switch that locks on, fails to stop until it is cycled again, or starts by itself. Most of the 50 blocks read are not UK reviews, beside a count of 143.
NANWEI NW-A8132 is the £65.99 cordless kit with a stated 125 mm class, three printed speeds at 5000, 7000 and 9800 rpm, and two 4.0 Ah batteries plus a charger. The listing voltage is 20 V, while bullets also claim an 18 V series fit, so you should not assume a Makita pack will lock. Wattage and the spindle thread are not stated. The item weight is 4.32 kg, which is the kit rather than the bare body in your hand. amazon.co.uk shows 4.2 from 86 reviews. Praise in the file covers a shaft lock, a brushless motor and the spare battery. Criticism covers a guard fitted the wrong way or blocking the disc, Makita batteries that would not lock, and cut-outs under load. One US review says no blades arrived, against a bullet list that names cutting and grinding discs.
Pros
Cons
Best for: A two-battery 125 mm kit for short jobs when you will check that the guard locates before the first cut.
Less suitable: You need M14 on the listing, a promise that Makita packs fit, or corded runtime.
Specifications
Common questions
What speeds does the NANWEI listing print?
Three speeds: 5000, 7000 and 9800 rpm. The maximum in the title is 9800 rpm. Wattage is not stated.
Are batteries included at £65.99?
The bullets list two 4.0 Ah packs, a charger and a case, plus cutting and grinding discs. The listing voltage is 20 V, and bullets also mention an 18 V series fit.
What do reviews say about the guard and batteries?
Reviews include a guard that would not locate or blocked the disc, Makita packs that would not lock, and packs that died during a cut. The item weight is 4.32 kg.
Kistrba ZGWL1640BDWTUK is a bare cordless body at £38.95 for a DeWalt 18 V or 20 V Max battery you already own. The specification prints 200 W, three speeds and up to 10000 rpm, and the highlight says 3000–10000 rpm. The item highlight calls it a 5 inch grinder, but the title does not print 125 mm, and the spindle thread is not stated. Listed weight is 1.53 kg, the lightest body in this set, and a paddle switch is claimed. amazon.co.uk shows 4.0 from 32 reviews. UK text says DeWalt packs fit for cuts in rebar and sheet, that a 4 Ah pack lasts better than 2 Ah, and that the disc can wobble. One review says there is no second action on the trigger, so the tool can start when it is carried with other tools. The 200 W figure is the listing’s power line, not a match for a 1000 W corded input.
Pros
Cons
Best for: Short cuts away from a socket when you already keep DeWalt 18 V packs of about 4 Ah.
Less suitable: A long session on one charge, a stated M14 thread, or a buyer who still has to price a battery.
Specifications
Common questions
Does this price include a DeWalt battery?
No. The variant is tool only at £38.95. The title says it is for a DeWalt 18 V or 20 V Max battery.
How many speeds are stated?
Three. The highlight says 3000–10000 rpm. A review maps roughly 4000, 7000 and 10000 rpm to buffing, polishing and cutting. That map is a review, not the specification table.
Why is 200 W not comparable to a 1000 W corded grinder?
The listing prints 200 W and 0.27 hp. Reviews already call that far below a corded 1000 W grinder. It is the number on the page, not a measured cutting rate.
TOPWAY model 100190 is the £29.99 corded listing, stated at 1200 W with a maximum of 12000 rpm and six speeds whose individual rpm figures are not printed. The title names both 115 mm and 125 mm, while a bullet says 125 mm capacity and M14, so the disc class is not settled on the page. Voltage is not stated, the disc is not included, and the listed weight is 2.25 kg. amazon.co.uk shows 3.3 from five reviews. Of the three texts, one says the switch starts the tool when it is set down, and one says the gear head separated from the housing while grinding metal. Five ratings cannot describe a market, and that head report is enough to keep the lowest price from being the default. Buy it only if the live title still reads as 125 mm and you will return it at the first fault.
Pros
Cons
Best for: Only a buyer who has checked the live title still says 125 mm and will stop at the first switch or head fault.
Less suitable: Anyone who needs a printed speed range, a disc in the box, or more than five ratings.
Specifications
Common questions
Is this a 115 mm or a 125 mm grinder?
The title names both 115 mm and 125 mm. A bullet states 125 mm blade capacity and M14. That size conflict stays on the page.
Are the six speeds printed as rpm steps?
No. The listing claims six speeds and a maximum of 12000 rpm. The individual step speeds are not printed. Voltage is also not stated.
What did the small review set say?
There are 3.3 stars from 5 ratings and three texts. One says the switch starts the tool when it is set down. One says the gear head separated from the housing while grinding metal.
Normodic 0HCBSA0000001 is listed at £69.99 as a 125 mm cordless kit. The title states 24 V, 640 W and a brushless variable-speed motor, and those watt and voltage figures are not repeated in the specification block. A bullet states 3000–12000 rpm with infinite variable control rather than a numbered step list, and another bullet states M14 and a 22.2 mm arbor. Weight is 3.44 kg. The bullet kit is two 4.0 Ah batteries, a charger, six grinding discs, a guard, a two-position handle and a case, while the specification field names only the angle grinder. The raw file has no customer-review line and no review text, so there is no star rating to set beside the NANWEI kit at £65.99. You are buying the bullet list, not a checked runtime.
Pros
Cons
Best for: A buyer who wants the widest claimed cordless range and will treat the kit list as unverified.
Less suitable: Anyone who wants amazon.co.uk reviews before spending £69.99, or a confirmed 230 V corded tool.
Specifications
Common questions
Where do 24 V and 640 W come from?
Both figures are in the title. They are not repeated in the specification block. The maximum rotational speed line says 12000 rpm, and a bullet says 3000–12000 rpm.
What is in the kit at £69.99?
Bullets list two 4.0 Ah batteries, a single-port charger, six grinding discs, a guard, a two-position handle and a case. The specification field names only the angle grinder.
Are there amazon.co.uk reviews in the raw file?
No. The raw file has no customer-review line and no review text.
Seven amazon.co.uk listings were scored from the stored pages and the review notes already on file. Shelf date 20 October 2026. There is no laboratory test and no vibration or disc-burst measurement. Stars are the listing line. The two POSENPRO 4.2-from-160 blocks are one sample. The highest score is the top pick. The best price against a usable printed range and a separate review count is the best value. The £29.99 listing is not that pick. The weights below sum to 100.
Amazon evidence
30%Star rating and review count. Reduced when the review text is shared with another ASIN, when most of the sampled text is not from the UK, or when the count is under ten. Zero when the raw file has no review line.
Spec clarity
35%A printed rpm range, a single disc class, a spindle thread, and a voltage or a named battery platform. A maximum plus an unnumbered speed claim scores below a printed range.
Price and kit
20%Shelf price in GBP, and whether a disc, a handle or batteries are named without a conflicting field. The lowest price does not outrank a printed range with its own review count.
Switch, guard and head
15%Points come off, up to 15, for switch, guard or gearbox-head reports in the review file. A head-separation note in a set of five reviews is enough to keep that listing off the value pick.
Check the disc class and a printed speed range before the star line. A cordless wattage is not a corded input wattage. The lowest shelf price in this capture is not the value pick: five reviews, a title that says both 115 mm and 125 mm, and a head-separation report.
A 125 mm variable speed angle grinder is a hand-held disc tool, often called a 5 inch grinder, whose spindle speed can be set below its maximum. You buy one on amazon.co.uk to cut and grind metal, and to flap-sand, wire-brush or polish at a lower rpm. On the listing, quality shows up as a printed speed range, an M14 spindle, a guard and a side handle, a BS 1363 plug or a battery platform you already own, and a disc whose marked rpm is at least the tool's maximum. Disc class comes first.
A title that also says 115 mm is a size conflict. A 230 mm tool is a different job. The TOPWAY title names both 115 mm and 125 mm, while a bullet says 125 mm capacity.
A printed 200 W or 640 W is not a 1,000–1,200 W mains input, and it is not a measured cutting rate. Norton's UK note treats cordless runtime as limited.
The TOPWAY claims six speeds and a 12,000 rpm maximum. The individual step speeds are not printed. A printed range, or a map such as 5,000 / 7,000 / 9,800 rpm, is the stronger listing.
The disc class should be 125 mm, or a stated 5 inch. A title that also says 115 mm is a conflict, and a 230 mm machine is a different job. A real speed range has numbers. A maximum of 12,000 rpm plus a claim of six speeds is weaker than 3,000–12,000 rpm, 2,000–12,000 rpm, or a printed 5,000 / 7,000 / 9,800 rpm map. The disc's marked maximum must be at least the grinder's maximum. Many 125 mm wheels are marked 12,200 rpm or 80 m/s under EN 12413.
Corded tools in this capture are about 1,000–1,200 W. The POSENPRO listings state 230 V. The TEENO and the TOPWAY do not state voltage, so you still confirm a BS 1363 plug on the live page. Cordless printed watts are a different figure: 200 W on the Kistrba specification, and 640 W in the Normodic title only. Norton's UK note treats cordless runtime as limited and a corded tool as the continuous option. On a UK site, HSE points to cordless tools or 110 V centre-tapped-to-earth.
Three typical situations, each with a recommendation from this comparison.
You want a corded 125 mm dial near £33 and you will read the switch notes before you trust the stars. The POSENPRO 1200 W is the top pick at about £33.99: 230 V, M14 and 3,000–12,000 rpm are stated. The 4.2 from 160 reviews is the same text as the 1,100 W listing.
You already keep DeWalt 18 V packs of about 4 Ah and the cuts are short. The Kistrba bare tool is about £38.95, with no battery, 200 W printed, three speeds and up to 10,000 rpm. It is 4.0 from 32 reviews. The title names DeWalt 18 V / 20 V Max. That is not a promise for every pack.
You want batteries in the box and a printed three-speed map. The NANWEI kit is about £65.99, with two 4.0 Ah packs, 5,000 / 7,000 / 9,800 rpm, and 4.2 from 86 reviews. Check that the guard locates. Reviews include Makita packs that would not lock. Site dust and 110 V work need a different starting point.
The top pick is the POSENPRO 1200 W at about £33.99, because 1,200 W, 230 V, M14 and a printed 3,000–12,000 rpm range are all stated. The 4.2 from 160 reviews is the same text as the 1,100 W POSENPRO file, and the weight lines disagree at 2.51 kg and 1.8 kg. The best value is the TEENO at about £32.99: M14, a range from 2,000 rpm, and its own 4.2 from 143 reviews. Voltage is not stated, and most of the sampled switch texts are not from the UK. The TOPWAY at about £29.99 is not the value pick. It has 3.3 from five reviews, a title that says both 115 mm and 125 mm, and a head-separation report. None of these scores is a laboratory test.
POSENPRO 1200W 125 mm corded angle grinder
1,200 W, 230 V and M14 are stated, with a printed 3,000–12,000 rpm range, at about £33.99.
TEENO 1000W variable speed angle grinder
About £32.99, with M14, a range from 2,000 rpm, and its own 4.2 from 143 reviews. Voltage is not stated.
Editorial
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.
Guides on what to look for, how to use a product, and common mistakes.
Public UK sources from the research digest, used for this page in October 2026. Prices, stars and review counts are from the seven amazon.co.uk listings captured on 20 October 2026. HSE vibration limits, PUWER and COSHH apply at work. They are not a certificate for a domestic grinder. No listing here prints a vibration figure.
This page contains affiliate links to amazon.co.uk (tag pcuk26-21). If you buy through them, we may earn a commission at no extra cost to you. Prices, stars and review counts are from the listings. This is not a laboratory test.
