The best angle grinders with speed control, compared.
Top pick: Bosch GWS 9-115 S 230 V – 230 V, 900 W, about £77.00, 4.6 from 205, with 50 UK blocks that mention speed selection. Best value: KATSU 115 mm 750 W – About £24.99, 750 W and 115 mm. The listing states that lower speed means lower power. Updated October 2026.
An angle grinder with speed control is a corded grinder with a dial or a thumbwheel. You slow a polishing pad or a wire cup and still cut near the top of the marked range. In the UK you buy one for light steel at home, the odd mortar joint, or a 110 V site supply. You recognise a usable example by the voltage printed on the tool, a disc rated for the grinder's maximum speed, a guard that stays on, and a review sample that belongs to that listing. A blank voltage line leaves the supply unknown. A lower dial setting can also mean less power. On site, HSE points to cordless tools or a 110 V supply centre-tapped to earth, so the voltage to earth stays at or below 55 V. A 230 V tool on that site needs an RCD. At home, use a UK 3-pin plug. Do not grind with a cutting disc. Voltage, the disc mark and the dial are set out in the [angle grinder with speed control buying guide](/hub/tools/angle-grinder-with-speed-control/sub/angle-grinder-with-speed-control-buying-guide).
An angle grinder with speed control is a corded grinder with a dial or a thumbwheel. You slow a polishing pad or a wire cup and still cut near the top of the marked range.
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Personal buying guide
Question 1 of 2
Which supply do you have?
The Bosch Professional GWS 9-115 S, part 0601396171, is the 230 V, 900 W listing at about £77.00 and 1.66 kg. The scope line includes a guard, an auxiliary handle, a backing flange, a locking nut and two-hole spanners, and it does not include a disc. All 50 review blocks in the file are from the United Kingdom, behind a listing line of 4.6 from 205. Reviewers bought it for the speed selection and describe a comfortable grip, and one used it for hours repointing a dormer. The same sample includes burnout on light work, failure after about three months, oil seeping during weekly knife-making cuts, and a motor that died after a disc stuck on thin concrete slabs. The amazon file says speed selection and does not print an rpm band. It is the top pick because no other row combines a printed domestic voltage with a UK sample of that size.
Pros
Cons
Best for: A 13 A socket and a 115 mm grinder, when you want the largest UK sample here that discusses speed selection.
Less suitable: A 110 V site, or a job that has to start tonight with discs already in the box.
Specifications
Common questions
What voltage and power are printed?
230 volts and 900 watts. Item weight is 1.66 kg. The style line says 230 V.
Does the raw file print an rpm range?
No. The bullets say speed selection. They do not print a rpm band, and they do not print restart protection.
What is in the scope of supply?
Backing flange, cardboard box, protective guard, locking nut, auxiliary handle and two-hole spanners. No cutting disc is listed.
The LiunxDromic UK3 lists 1000 W, 125 mm, M14 and six speeds from 2,000 to 12,000 rpm, at about £44.64 and 1.91 kg. Bullets name cutting discs, grinding discs, a wood saw blade, a diamond blade, a flap disc, a wool pad, sandpapers, a cover, a handle, a wrench and a canvas bag. The included-components field only says angle grinder. The listing is 4.5 from 32, with 16 UK blocks in the file. Praise covers steel cutting and the bag. One UK reviewer said the disc jumped off the axis every time the tool was switched off on a concrete kerb. Another said the spindle lock seized on the first disc change, within about five minutes. The spec block does not print a voltage, and a review that mentions a moulded UK plug is not a specification line.
Pros
Cons
Best for: A stated low floor and a bag of accessories, if you will stop when a disc does not stay on the spindle.
Less suitable: Using the bundled wood blade as a cutting method, or a site that needs a printed voltage.
Specifications
Common questions
What does the kit bullet list?
Cutting discs, grinding discs, a wood saw blade, a diamond blade, a flap disc, a wool pad, sandpapers, a cover, a handle, a wrench and a canvas bag. The included-components field only says angle grinder.
Is the voltage printed?
No voltage line is in the spec block. One UK review says a moulded UK plug is fitted. That is a review, not a specification line.
What failed in the UK reviews?
One reviewer said the disc jumped off the axis when switching off. Another said the spindle lock seized on the first disc change. The listing is 4.5 from 32, with 16 UK blocks in the file.
The Bosch Professional GWS 9-115 S, part 0601396161, prints 110 V, 900 W, about £79.99 and 1.75 kg. The scope line matches the 230 V twin: a guard, an auxiliary handle, a flange, a locking nut and two-hole spanners, and no disc. The listing is 4.4 from 22, and the file holds five UK blocks. Two are short praise. One says the box was torn and the auxiliary handle was missing. One says a first unit died after eight months and the replacement lasted two months. The spec block does not say this tool runs from a 13 A socket. It is the only raw file in this set that prints 110 V, and the amazon bullets say speed selection without an rpm range.
Pros
Cons
Best for: A UK site supply at 110 V, when you want this Bosch speed-selection model.
Less suitable: A kitchen or garage 13 A socket, or anyone who needs a large review sample.
Specifications
Common questions
How does this differ from the other GWS 9-115 S here?
This listing prints 110 volts, part 0601396161, about £79.99 and 1.75 kg, at 4.4 from 22. The other prints 230 volts, part 0601396171, about £77.00 and 1.66 kg.
Does the spec block say it runs from a 13 A socket?
No. The spec block says 110 volts. It does not say 230 volts.
What did the five UK reviews say?
Two are short praise. One says the auxiliary handle was missing from a torn box. One says a second unit failed within months.
The POSENPRO PPAG1100/125 prints 1100 W, 125 mm, 230 V AC and a six-speed dial from 3,000 to 12,000 rpm, at about £33.99 and about 2.2 kg. The components bullet names the grinder, a two-position handle, a spanner, a manual and two carbon brushes, and it does not name a disc. A tool-free guard and a raised spindle lock are in the bullets. The listing shows 4.2 from 160, and the review text is the same block as B0GLN17T49, so that figure is one sample. In that block, buyers cut steel trunking and a padlock, and they also report a switch dead after about 45 seconds, a motor that stopped after about an hour, and a motor burnt out on polishing mops. M14 is not in this spec block.
Pros
Cons
Best for: A 230 V, 125 mm dial if you accept one shared review file and you unplug as soon as the switch sticks.
Less suitable: Polishing mops, or buying both POSENPRO ASINs to double the review count.
Specifications
Common questions
What does the components bullet include?
The grinder, an auxiliary handle, a spanner, a user manual and 2 carbon brushes. It does not name a disc.
Are the 160 reviews only about this ASIN?
The review text in this raw file is identical to ASIN B0GLN17T49, and both show 4.2 from 160. Treat that as one shared block.
What speed and voltage are printed?
A 6-speed dial from 3,000 to 12,000 rpm, 1100 W, 125 mm, and 230 V AC.
The POSENPRO PPAG1200/125 prints 1200 W, 125 mm, M14, 230 V AC and 3,000–12,000 rpm, also at about £33.99. The item-weight line says 2.51 kg and a bullet says 1.8 kg net, so the file does not settle the weight. The components bullet lists no disc, while the included-components field lists one tool-free grinding wheel. A guard is not named in the bullets. The 4.2 from 160 review text matches B0BPBR4P93 exactly, including a switch dead after about 45 seconds and a motor burnt out on polishing mops. The rank line is the same as the 1100 W page. You are not looking at a second set of 160 reviewers.
Pros
Cons
Best for: You specifically want the M14 line on a 230 V POSENPRO and you will not treat the stars as a new sample.
Less suitable: Choosing it over the 1100 W model because of 160 extra reviews, or running polishing mops.
Specifications
Common questions
Is M14 stated?
Yes. The bullet says a 125 mm disc and an M14 shaft, with a 6-speed dial from 3,000 to 12,000 rpm.
Is a grinding wheel included?
The components bullet does not name a disc. The included-components field lists one tool-free grinding wheel. Those two lines disagree.
Which weight is printed?
The item-weight line says 2.51 kg. A bullet says 1.8 kg net. Both are in the raw file. The 4.2 from 160 review block matches B0BPBR4P93.
The TEENO 1000 W, 125 mm grinder lists six speeds from 2,000 to 12,000 rpm and a box with two cutting discs, two grinding discs, a guard, a wrench, a handle and two carbon brushes, at about £32.99 and 2.43 kg. The listing line is 4.2 from 143. Of the first 50 blocks in the file, six are from the United Kingdom. Two of those six say the switch did not stay off, or the tool started turning itself on. Other UK notes say the low setting was useful for stone and that it felt powerful after two cordless grinders were returned. The spec block does not print a voltage or M14. A bullet also mentions two anti-vibration handles while the pack line says one handle.
Pros
Cons
Best for: A buyer who wants four discs in the box tonight and will stop if the switch does not kill the disc.
Less suitable: Anyone treating 143 reviews as a British sample, or a site that needs a printed voltage.
Specifications
Common questions
Which discs are listed?
The pack line lists 2 cutting discs and 2 grinding discs, plus a protective cover, a wrench, a handle and 2 carbon brushes.
Are the 143 reviews a UK sample?
The listing shows 4.2 from 143. Of the first 50 blocks in the raw file, 6 are reviewed in the United Kingdom. Two of those say the switch did not stay off or the tool turned itself on.
Is a voltage printed?
No. The power source line says corded electric. There is no voltage figure.
The DEWINNER DE-8108-DPJ-uk lists 1000 W, 125 mm, M14, a 2 m cable in a bullet, and six speeds from 2,000 to 12,000 rpm, at about £48.99. The kit names three cutting discs, two grinding discs, a wood saw blade, a diamond blade, a flap disc, a wool pad, a cover, a wrench, brushes and a canvas bag. Item weight is 3.11 kg, while a unit-count line also says 1.9 kg. The listing is 4.2 from 37, and the file holds 22 UK blocks. Reviewers liked the speed range for cutting and polishing and liked not making a second shop trip. One could not change a stuck blade. Another said the plastic felt thin, the motor noise kept changing, and the vibration was uncomfortable. No voltage is printed.
Pros
Cons
Best for: A homeowner who wants discs and a wool pad in one box and can accept a heavy 125 mm body.
Less suitable: Long sessions if vibration already bothers you, or any job that treats the wood blade as a standard disc.
Specifications
Common questions
What accessories are listed?
The kit bullet includes 3 cutting discs, 2 grinding discs, a wood saw blade, a diamond blade, a flap disc, sandpapers, a wool pad, a cover, a wrench, carbon brushes and a canvas bag. A bullet also says a 2 m cable and M14.
Is the voltage printed?
No voltage line is in the spec block. The power source is corded electric.
What did UK reviews complain about?
One could not change a stuck blade. One said the plastic felt thin, the motor noise changed, and the vibration was uncomfortable. The file holds 22 UK blocks against a listing count of 37.
The KATSU 115 mm grinder at about £24.99 is the listing in this set that tells you what the dial costs in power. It states 750 W, a maximum of 11,000 rpm, an M14 shank and 1.94 kg, and the bullet says a lower speed means lower power and is not for heavy-duty work. Across 3.4 from 14 amazon.co.uk reviews, 10 of the 11 saved blocks are from the United Kingdom. One reviewer cut a large number of 10 mm threaded studs in a cut-off stand and still doubted heavy work. Another returned the tool unused because the slide switch was too stiff, and a third said the motor gave up after about 3.5 hours of raking mortar, not continuous. A further unit disintegrated internally after two short uses. No disc is included, the spec block does not print a voltage, and a guard is not named. It is the best value because the listing states that limit.
Pros
Cons
Best for: Short 115 mm cuts when you already own discs and you have read the low-speed power warning.
Less suitable: Hours of mortar raking, or any heavy job that needs the low dial to keep full power.
Specifications
Common questions
Is a disc included?
No. The bullet says the disc is not included. It states a 115 mm capacity and an M14 shank.
Does a lower dial setting keep full power?
The listing says this is a cost-efficient variable-speed system and that lower speed means lower power. It says low speed is not for heavy-duty work.
What voltage is printed?
The stored spec block does not print a voltage. The power source is corded electric.
The TOPWAY listing asks about £29.99 for a 1200 W corded grinder with six speeds, a stated maximum of 12,000 rpm, and an item weight of 2.25 kg. The capacity bullet says 125 mm and M14, and says the disc is not included, while the title also prints 115 mm. Of five reviews on the listing, three blocks are in the file. One calls it good value. One says the switch stuck while carving wood and could touch the bench when the tool was set down. One says the head unit came away from the housing while grinding metal. The seller describes a budget range for DIY and light tasks, and the spec block prints neither a voltage nor a guard.
Pros
Cons
Best for: A price comparison at the cheap end, if you will not run a tool with this head-separation report.
Less suitable: Any cut or grind, because a head that leaves the housing is a stop, not a quirk.
Specifications
Common questions
Is it 115 mm or 125 mm?
The title prints both 115 mm and 125 mm. The capacity bullet says 125 mm with an M14 shank, and says the disc is not included.
What is in the three UK reviews?
One says it worked well. One says the switch stuck while carving wood. One says the head unit came away from the housing while grinding metal.
What power is printed?
1200 watts, with a stated maximum of 12,000 rpm. No voltage line is printed.
Nine amazon.co.uk listings were scored from the stored pages and the review notes already on file. Shelf date 21 October 2026. There is no laboratory test. Stars are the listing line. A non-UK block does not count as British opinion. The two POSENPRO listings share one review block, so that volume is counted once. TEENO's 4.2 from 143 is capped because only 6 of the first 50 blocks are from the United Kingdom. The highest score is the top pick. The KATSU is the best value because the listing states that lower speed means lower power. One of each. The weights below sum to 100.
Amazon stars and volume
40%The UK listing's star line, lifted when the saved blocks are from the United Kingdom, and capped when the sample is tiny or shared with another ASIN.
Review sentiment
25%Repeated themes in those UK blocks: a switch that will not stop the disc, a head or disc that leaves the body, burnout, a missing handle. A non-UK block does not count as British opinion.
Spec and box
20%Printed voltage, wattage, a numeric speed floor where the listing gives one, a guard, M14 only where it is stated, and discs the components line actually names. A wood saw blade in the kit is a deduction. A blank voltage line is a gap.
Price and a usable box
15%GBP in this capture, from about £24.99 to about £79.99, against what you can use on day one. The dearest tool can still lead if the UK review sample is the one that talks about speed selection. The cheapest tool is best value only because the listing states its limit.
Match the printed voltage to the supply you have, then the disc to the tool's maximum speed. A dial is not constant power. A star line only counts when the review blocks belong to that listing, and when a shared block is counted once.
An angle grinder with speed control is a corded grinder whose listing claims a dial or a thumbwheel. You slow a pad or a wire cup, and you still cut at the top of the range. Buyers in this set are home metalworkers, people repointing the odd wall, and anyone whose site wants 110 V rather than a 13 A plug. Quality shows in the voltage match, a disc rated for the tool's maximum rpm, a guard, and a review sample that really belongs to that listing.
B0BPBR4P93 and B0GLN17T49 show the same 4.2 from 160 review text. That volume counts once. The shared block includes a switch dead after about 45 seconds and a motor burnt out on polishing mops.
No raw file states constant-speed electronics. The KATSU listing says lower speed means lower power and is not for heavy work. The Bosch rpm band of 2,800–11,000 rpm is in the manual, not in the amazon bullets.
The accessory must be rated at least as high as the maximum marked on the tool, even when the dial is low. FEPA's EN 12413 leaflet says the same, and the guard stays on. Do not grind with a cutting disc, and do not treat a bundled wood blade as a normal disc.
UK mains are nominally 230 V, and a domestic mains grinder uses a UK 3-pin plug. In this set, 230 V is printed on Bosch part 0601396171 and on both POSENPRO pages. 110 V is printed only on Bosch part 0601396161. KATSU, TOPWAY, TEENO, DEWINNER and LiunxDromic do not print a voltage. A blank line leaves the supply unknown. HSE says DIY leads are not for site conditions. On site, the cited pattern is cordless tools or 110 V centre-tapped to earth, so the voltage to earth stays at or below 55 V.
The KATSU listing is the one that says lower speed means lower power, and that low speed is not for heavy work. It is 750 W, 115 mm, maximum 11,000 rpm, with no speed floor printed. The Bosch amazon bullets say speed selection and do not print an rpm band. The manual, not the listing, gives 2,800–11,000 rpm and restart protection. Both POSENPRO pages print 3,000–12,000 rpm on a six-speed dial. TEENO, DEWINNER and LiunxDromic print 2,000–12,000 rpm.
Three typical situations, each with a recommendation from this comparison.
You want one small grinder for steel and the odd pad on a domestic socket. The Bosch GWS 9-115 S 230 V, part 0601396171, is the top pick at about £77.00: 900 W, 1.66 kg, 4.6 from 205, with 50 UK blocks. No disc is in the box, and the amazon file does not print an rpm band.
You want discs in the box tonight. The TEENO lists two cutting discs and two grinding discs at about £32.99, with a printed range of 2,000–12,000 rpm. The listing is 4.2 from 143, and only 6 of the first 50 blocks are from the United Kingdom. Two of those six say the switch did not stay off. No voltage is printed.
You are on a 110 V site supply. Only the Bosch GWS 9-115 S part 0601396161 prints that voltage, at about £79.99, 900 W and 1.75 kg. The listing is 4.4 from 22, with five UK blocks: a missing auxiliary handle and a repeat breakdown are in that file. It is the wrong supply for a 13 A socket.
The top pick is the Bosch Professional GWS 9-115 S at 230 V, part 0601396171, about £77.00, 900 W, 4.6 from 205. The 50 blocks in the file are from the United Kingdom and mention speed selection, and they also mention burnout, oil and a stuck disc. It leads because it combines a printed domestic voltage with a UK sample of that size. The best value is the KATSU at about £24.99, 750 W, because the listing states that lower speed means lower power. The 110 V Bosch, part 0601396161, is the site-supply listing at about £79.99. The two POSENPRO pages share one review block. There is no laboratory test behind these scores.
Bosch GWS 9-115 S 230 V
230 V, 900 W, about £77.00, 4.6 from 205, with 50 UK blocks that mention speed selection.
KATSU 115 mm 750 W
About £24.99, 750 W and 115 mm. The listing states that lower speed means lower power.
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 nine amazon.co.uk listings captured on 21 October 2026. HSE site-voltage guidance and PUWER apply at work. They are not a certificate for a domestic grinder. Restart protection and the 2,800–11,000 rpm band are Bosch manual facts, not amazon bullets.
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.
