The best 125 mm angle grinders, compared.
Top pick: Bosch GWS 7-125 – 4.7 from 22,017 ratings, restart protection on the listing, and a published vibration figure, at about £71.98. Check the plug. Best value: DEWINNER 1,000 W – About £48.99, 4.2 from 37 UK reviews, and a metal and diamond kit, if the wood blade stays in the bag. Updated October 2026.
A 125 mm angle grinder is the five-inch class sold in the UK beside 115 mm and 230 mm tools, almost always with an M14 spindle and a 22.23 mm disc bore. You buy one to cut metal, dress welds, or nick paving. A suitable tool was built for 125 mm discs, keeps the guard on, and plugs into UK mains with a three-pin plug on 230 V. The disc must be marked at least as fast as the machine. A switch that will not stop the motor is a return, not a quirk. Restart protection is different: it blocks a surprise start after a power cut. A speed dial helps flap discs and polishing. It does not authorise side-loading a cutting disc or fitting a toothed blade. Wattage is duty, not a trophy. A retailer rule of thumb puts this size around 700–1,200 W for regular small-scale work. Disc class, plug, switch and speed are set out in the [125 mm angle grinder buying guide](/hub/tools/angle-grinder-125mm/sub/angle-grinder-125mm-buying-guide).
A 125 mm angle grinder is the five-inch class sold in the UK beside 115 mm and 230 mm tools, almost always with an M14 spindle and a 22.23 mm disc bore. You buy one to cut metal, dress welds, or nick paving.
38 products checked · 67 hrs invested · +28,400 readers
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Personal buying guide
Question 1 of 2
Where will you plug it in?
The Bosch Professional GWS 7-125, model 0601388108, is the top pick in this comparison at about £71.98, with 4.7 from 22,017 amazon.co.uk ratings. The listing is a 720 W, 230 V, 125 mm corded grinder at 11,000 rpm, and the bullets claim restart protection and a protective guard. Bosch's own page states M14, about 1.9 kg and 6.5 m/s² for surface grinding with an uncertainty K of 1.5; the Amazon weight line says 2 kg. A disc is not included, and the tool comes in a carton. Only four of the first 50 captured reviews are marked United Kingdom, and two of those four say the tool arrived with a two-pin plug rather than a UK three-pin plug. That plug check is the practical limit on an otherwise clear specification: restart protection does not help if you need an adaptor to switch it on. The rating count is the largest in the set, but it is not a claim that most of the written reviews you scroll are British. Choose it for a fixed-speed 125 mm body you can return if the plug is wrong, not because 720 W is the highest sticker here.
Pros
Cons
Best for: A corded 125 mm for home metalwork when you will check for a UK three-pin plug on arrival and you do not need a speed dial.
Less suitable: 110 V site power, polishing that needs a dial, or anyone who will not return a two-pin plug.
Specifications
Common questions
Does the listing claim restart protection?
Yes. The bullets say restart protection and a protective guard.
Is a disc included?
A disc is not in the included-components list. The tool comes in a carton, not a case.
Did UK reviewers mention the plug?
Two of the four UK reviews in the first 50 say the tool came with a two-pin plug rather than a UK three-pin plug.
The Makita XAG25Z is listed on amazon.co.uk at about £124.27 with 4.5 from 395 reviews, but every one of the first 50 captured reviews is marked United States, and the voltage line says 120. It is an 18 V LXT X-LOCK bare tool titled for 4-1/2 inch and 5 inch discs, with 8,500 rpm and 350 W printed on the listing. Battery and charger are not included. The bullets say only X-LOCK accessories, and US reviews say normal discs do not fit, so a cupboard of M14 125 mm discs is the wrong consumable. The weight line of 454 g and the 30.5 cm cube dimensions do not read like a complete UK grinder specification. AFT stop if the wheel stalls is claimed, and the listing names a grinding guard and a cut-off guard. It is a US-market bare tool sitting on a UK price, not the cordless grinder a British buyer usually means by an 18 V 125 mm with an M14 thread.
Pros
Cons
Best for: An owner of US-market 18 V LXT packs and X-LOCK discs who has checked the live voltage before paying about £124.27.
Less suitable: A UK mains buyer, or anyone with a drawer of threaded 125 mm discs and no spare LXT battery.
Specifications
Common questions
Will ordinary 125 mm discs fit?
The bullets say only X-LOCK accessories. US reviews say normal discs do not fit.
Is a battery included?
No. The listing is a bare tool. Battery and charger are not included.
Are the reviews from the UK?
The first 50 captured reviews are all marked United States. The price is the GBP figure on amazon.co.uk.
The LiunxDromic UK3 is a corded 1,000 W kit with a captured price of about £44.64, 4.5 from 32 reviews, a dial from 2,000 to 12,000 rpm, an M14 spindle and a canvas bag. The shelf price later showed as £61.49, so treat £44.64 as the recorded price, not a promise. No voltage line is printed on the listing, though one UK reviewer says it has a moulded UK plug and is mains, not battery. The box lists discs including a diamond blade, a flap disc and a wood saw blade. A toothed blade is not an approved angle-grinder accessory, so that blade is a hazard in the bag rather than a bonus. One reviewer could not free the spindle lock. Another said the disc jumped and kept turning after switch-off. At a listed 1.91 kg it is one of the lighter bodies here, and 32 UK reviews is a clearer sample than five. The run-on and the wood blade are why it is not the best-value pick.
Pros
Cons
Best for: A mains kit in a bag when you will bin or ignore the wood blade and you can still buy it near the captured £44.64.
Less suitable: Shoppers who want the wood blade as a feature, or who need a fixed published voltage and a price that has not already moved.
Specifications
Common questions
Does the kit include a wood saw blade?
Yes. The bullets list a wood saw blade among the accessories. Do not fit it.
What voltage is printed?
No voltage line is printed on the listing. One UK reviewer says it has a moulded UK plug and is mains, not battery.
What went wrong in UK reviews?
One reviewer could not free the spindle lock. Another said the disc jumped and kept turning after switch-off.
Across 193 amazon.co.uk reviews at 4.2 stars, the TOPWAY 750 W is a corded grinder at about £23.99 whose title names both 115 mm and 125 mm while the bullets claim a 125 mm capacity, an M14 spindle and 11,000 rpm. The listing is explicit that no blade is in the box, and UK reviews repeat that no disc arrived. At 2.1 kg and 750 W on 230 V it sits at the light end of a small-grinder wattage band, which is enough for short cuts in bar and sheet if the disc you buy is marked for at least 11,000 rpm. More than one UK review says the side handle snapped in use, so the auxiliary handle is not something to treat as a spare. The comparison row also notes a rear switch that stays on, which matters on a tool you may set down while the disc is still spinning. It is a cheap first corded body if you already own the right 125 mm discs and you check the guard on arrival. The mixed size title means you should confirm the guard was built for 125 mm before you fit one.
Pros
Cons
Best for: A short corded cut in metal when you already own 125 mm discs and will check the guard and handle on day one.
Less suitable: You need a disc in the box, a title that names one disc class, or a side handle that UK reviews treat as durable.
Specifications
Common questions
Does this TOPWAY come with a disc?
No. The listing says angle grinder without blade, and UK reviews repeat that no disc arrived.
Is it 115 mm or 125 mm?
The title says both. The bullets claim a 125 mm blade capacity and an M14 shank.
What do UK reviews say about the handle?
More than one UK review says the side handle snapped in use.
The POSENPRO PPAG1200/125 is listed at about £33.99 as a 230 V, 1,200 W, 125 mm grinder with a six-speed dial from 3,000 to 12,000 rpm. The star line is 4.2 from 160, but the captured review text, stars and best-sellers rank match the 1,100 W POSENPRO ASIN B0BPBR4P93, so those 160 reviews are one shared pool rather than a second British sample. Several of those reviews describe the on/off switch failing or not stopping the motor, and some describe motor burn-out. Weight lines disagree: 2.51 kg on the specification and 1.8 kg net in a bullet. Whether a grinding wheel is in the box is also contested between the components bullet and a later included-components line. A review says the guard sticks out. Treat this as the same evidence as the 1,100 W sibling, not as an independent vote for the higher wattage.
Pros
Cons
Best for: A shopper who wants a 230 V dial grinder at about £33.99 and will treat the review text as one pool shared with the 1,100 W POSENPRO.
Less suitable: Anyone adding the two 160-review lines together, or who needs a switch record that is not already full of stop failures.
Specifications
Common questions
Does the box include a grinding wheel?
The components bullet does not list a disc. A later included-components line lists one tool-free grinding wheel.
Are these 160 reviews only for this model?
The captured review text, star line and best-sellers rank match the 1,100 W POSENPRO ASIN B0BPBR4P93.
What fails in the UK reviews?
Several reviews describe the on/off switch failing or not stopping the motor, and some describe motor burn-out.
The POSENPRO PPAG1100/125 is the other listing at about £33.99, marked 1,100 W, 125 mm and 230 V, with a claimed tool-free guard and a two-position rubber side handle. The components bullet does not list a disc. It shares the 4.2 from 160 review block with B0GLN17T49, including the switch failures and burn-out comments, so you should not add the two counts together. The spindle lock is claimed, yet M14 is not named on the Amazon lines, which is awkward when almost every other row in this set states M14. Listed weight is 2.2 kg and the colour is green. The tool-free guard is the useful claim if it is a guard you can set without taking it off, but the shared reviews are about the switch, not about a guard that makes the tool safer in practice. The six-speed dial runs from 3,000 to 12,000 rpm on the listing. It is the same purchase decision as the 1,200 W POSENPRO unless the live page shows a disc and a switch that stops.
Pros
Cons
Best for: A 230 V 125 mm body at about £33.99 if you want the tool-free guard claim and you already know the reviews are not a separate sample.
Less suitable: Buyers who need a named M14 line, a disc in the box, or an independent review count.
Specifications
Common questions
Is a disc in the box?
The components bullet does not list a disc.
Why is the star line identical to another POSENPRO?
The stored review text, the 4.2 from 160, and the best-sellers rank match ASIN B0GLN17T49.
Does the listing claim a guard?
Yes. The bullets say a tool-free wheel guard and a raised spindle lock.
The TEENO is a corded 1,000 W grinder at about £32.99, 4.2 from 143 reviews, with a dial from 2,000 to 12,000 rpm and four 125 mm discs that the bullets restrict to metal. The box also lists a handle, a protective cover, a wrench and two brushes, at a listed weight of 2.43 kg on an M14 spindle. UK reviews in the sample describe a switch that locks on, does not turn the tool off, or a tool that turns itself on. That limitation outweighs the accessory count: a grinder you cannot stop from the switch is not a tool you keep using on a bench. The discs are metal only, so they are the wrong consumable for paving even though the speed range looks useful for flap work on steel. A UK reviewer chose it after returning cordless grinders, which fits a mains workshop if the switch still cuts the motor when you test it before the first cut. Model T81-08CKG is the name on the listing.
Pros
Cons
Best for: Metal cutting and flap work on a mains bench if you test the switch before you trust it and you will not use the kit discs on concrete.
Less suitable: Paving, or any job where a switch that locks on would leave the disc spinning.
Specifications
Common questions
Are the included discs for every material?
The bullets say the cutting and grinding discs supplied are only suitable for metals.
What do UK reviews say about the switch?
UK reviews say the switch locks on, does not turn the tool off, or that the tool turns itself on.
Is it cordless?
No. The listing is corded. A UK reviewer chose it after returning cordless grinders.
The DEWINNER DE-8108-DPJ-uk is the best value in this set at about £48.99, 4.2 from 37 reviews, as a 1,000 W corded kit with a six-speed dial up to 12,000 rpm and an M14 spindle. UK reviewers praise cutting cement, slabs and metal, the accessory set, and keeping a second grinder set up for cutting. The bullets claim about 20 accessories, including a wood saw blade, which you should not fit. Stuck-blade and vibration comments are in the same sample. Item weight is printed as 3.11 kg while a unit-count line says 1.9 kg, so do not quote one mass. Voltage is not stated on the captured lines. Thirty-seven reviews is still a modest count next to the Bosch, and the kit's value depends on you leaving the toothed blade in the bag and buying discs that match the job. It earns the best-value place on price, a UK review sample and a usable metal-and-masonry kit, with that blade condition attached.
Pros
Cons
Best for: A second corded grinder left set up for cutting, if you will not fit the wood blade and about £49 is the budget.
Less suitable: Anyone who treats a packed wood blade as a reason to buy, or who wants the largest review count in the table.
Specifications
Common questions
Is a wood blade in this kit?
Yes. The bullets list a wood saw blade as well as metal cutting discs and a diamond blade. Do not fit the toothed blade.
Which weight figure is on the listing?
Item weight is 3.11 kg. A separate unit-count line says 1.9 kilograms.
What do UK reviewers praise?
Cutting cement, slabs and metal, the accessory set, and using it as a second grinder left set up for cutting.
The JCB 21-AG125 is listed at about £43.98 with 3.7 from 18 reviews. The specification says corded electric, 240 V and 840 W, while the title also says 18V and 850 W, so you are not looking at a battery tool. No-load speed is 11,500 rpm, listed weight is 2.2 kg, and the bullets claim an adjustable guard and a two-position anti-vibration side handle. A disc is not in the included-components line, which names the handles, and one reviewer says no key arrived. UK reviews say the on/off switch is hard to use and, in one case, too stiff on the second day, so the tool was returned. Eighteen reviews is a small sample beside the larger Bosch count. A stiff switch is a poor match for a tool you must be able to stop. It is a named-brand corded body if the live listing's voltage line still says 240 V and the switch moves freely before you fit a disc.
Pros
Cons
Best for: A mains workshop that wants a branded 125 mm body around £44 and will confirm 240 V and a usable switch before the first disc.
Less suitable: Anyone shopping for an 18 V cordless grinder, or who needs a large review sample and a disc in the box.
Specifications
Common questions
Is this an 18 V cordless grinder?
The title says 18V and corded. The specification says corded electric, 240 V and 840 W.
What is in the box?
The included-components line names anti-vibration side handles. A disc is not listed. One reviewer says no key arrived.
What do the UK reviews say about the switch?
Reviewers say the on/off switch is hard to use and, in one case, too stiff on the second day, so the tool was returned.
The Bosch Professional GWS 12-125, model 06013A6170, is listed at about £106.74 as a 1,250 W, 240 V corded grinder with a keyless guard and a clip-on cutting guard. The star line is 3.4 from eight reviews, all eight captured texts marked United Kingdom, and one says the tool failed after about 20 minutes. No rpm figure is on the captured specification, and the listing does not claim variable speed. A UK reviewer says it would be better with a dial. Listed weight is 2.4 kg. A disc is not in the box list, which does include the auxiliary handle, both guards, a flange, a nut and a spanner. Eight reviews cannot carry about £107 against the GWS 7-125's much larger count, and an early failure in that small sample is why the higher wattage does not win. It is the model to look at only if you specifically want the keyless guard and you accept a thin UK sample.
Pros
Cons
Best for: A buyer who wants the keyless Bosch guard and will read all eight UK reviews before paying about £106.74.
Less suitable: Anyone assuming more watts and a higher price make a better pick than the GWS 7-125.
Specifications
Common questions
Is the no-load speed printed?
No rpm figure is on the captured specification lines.
Does it have variable speed?
The listing does not claim it. One UK reviewer says it would be better with variable speed.
What is the review sample?
3.4 from 8, all eight captured reviews marked United Kingdom. One says the tool failed after about 20 minutes.
The TOPWAY 1,200 W budget model is listed at about £29.99 with a six-speed dial up to 12,000 rpm and an M14 spindle, and the star line is 3.3 from only five reviews. The bullets say the disc is not included, and the title again prints both 115 mm and 125 mm. One UK reviewer says the head unit came away from the housing. Another says the switch stuck and the tool could start when it was set down. At 2.25 kg the body is not heavy, but five reviews is too small a sample to treat 1,200 W as proven duty. A wattage sticker under £35 is not professional continuous work. Three review texts were captured against a five-review star line, so even the count is thin. Buy it only if you accept that those failure reports are the story of this listing.
Pros
Cons
Best for: Only a buyer who has read the five-review sample and still wants a cheap dial grinder to inspect immediately.
Less suitable: Anyone who needs a switch that stays off when the tool is set down, or a review count large enough to judge a 1,200 W claim.
Specifications
Common questions
Is a disc included?
No. The bullets say the disc is not included.
What failed in the UK reviews?
One reviewer says the head unit came away from the housing. Another says the switch stuck and could start the tool when it was set down.
How many reviews are on the listing?
The star line is 3.3 from 5. Three review texts were captured.
Eleven amazon.co.uk listings were scored for this comparison only. Stars, review counts and prices are the figures stored for these ASINs. There is no laboratory test. A very large rating count lifts the score. Five or eight reviews cap it. The shared POSENPRO review block counts once. The highest score is the top pick. Best value is the kit that still looks usable once a packed wood blade is ignored. One of each. The weights below sum to 100.
Amazon stars and volume
35%The UK listing's star line and review count. A very large count lifts the score. Five or eight reviews cap it.
Switch and review sentiment
25%UK texts about the switch, the gear head, the spindle lock, and a disc that keeps turning. The shared POSENPRO pool counts once.
Spec clarity
20%One disc class, a voltage, M14 or an honestly named X-LOCK, and any plug note. A title that prints two disc sizes scores lower.
Price and a usable box
20%The GBP price against discs, a guard and a bag. A wood saw blade in the kit is not a plus.
Buy the disc class, the guard and the plug before you buy a wattage sticker. UK mains are nominally 230 V with a BS 1363 three-pin plug. A switch that will not stop the motor is a return. A toothed blade in the box is not an approved accessory. Stars on this page are the amazon.co.uk count.
A 125 mm angle grinder takes a five-inch disc. In the UK it sits beside 115 mm and 230 mm tools. The usual spindle is M14, and the usual bore is 22.23 mm. People buy one to cut metal, dress a weld, or nick a paving slab. The useful differences are the guard, the plug, whether the switch actually stops the motor, and whether the claimed wattage survives more than a few minutes. A high wattage sticker is not the same thing as a tool that keeps working. Buy the grinder that was built for 125 mm.
HSG17 treats the guard as the part that also stops an oversize wheel. A 115 mm guard is not a 125 mm guard with the cover removed.
OPSS PSA5 says not to fit a toothed blade to an angle grinder. Two kits in this set list one. Leave it in the bag.
Concrete dust is silica. Extract it or cut wet. A thicker slab than the disc can finish in a controlled pass needs a 230 mm cutter or a score-and-snap.
The grinder has to be the one built for 125 mm. The usual thread is M14 and the usual bore is 22.23 mm. Do not take the guard off a 115 mm tool to fit a larger disc. HSG17 treats that guard as the part that also stops an oversize wheel. A title that prints 115 mm and 125 mm together is a reason to check the guard on arrival, not a reason to assume both sizes are safe. Domestic tools need a UK three-pin BS 1363 plug on 230 V. Site tools are often 110 V.
Fixed speed around 11,000 rpm suits cutting and grinding discs marked for that speed. A dial from about 2,000 to 12,000 rpm helps polishing and flap discs. It does not authorise side-loading a cutting disc, and it does not make a toothed blade safe. The disc marking is EN 12413. Its rpm must be at least the machine's. Do not grind with a cutting wheel. Screwfix's table, a retailer rule of thumb, puts 125 mm tools around 700–1,200 W for regular small-scale work.
Three typical situations, each with a recommendation from this comparison.
You want a corded 125 mm body, a guard, and a switch story that is not already full of stop failures. The Bosch GWS 7-125 is the top pick at about £71.98, 720 W and 11,000 rpm, with 4.7 from 22,017 ratings. Check for a UK three-pin plug. There is no disc and no speed dial.
You want discs in the bag and UK reviews that mention cement, slabs and metal. The DEWINNER is best value at about £48.99, 4.2 from 37 reviews, with a dial to 12,000 rpm. Leave the wood saw blade unused. Extract concrete dust or cut wet.
You already own US-market 18 V LXT packs and X-LOCK discs. The Makita XAG25Z is the only cordless row, at about £124.27, bare, with the voltage line at 120. Ordinary M14 discs do not fit. It is not a UK 230 V grinder.
The top pick is the Bosch Professional GWS 7-125 at about £71.98, on 4.7 from 22,017 ratings, restart protection on the listing, and Bosch's published 6.5 m/s² for surface grinding, K 1.5. Two of the four United Kingdom reviews in the first 50 mention a two-pin plug. The best value is the DEWINNER at about £48.99, 4.2 from 37 UK reviews, with a metal and diamond kit, on the condition that the wood blade is not fitted. The LiunxDromic scores higher and does not take that badge, because of that same wood blade, spindle-lock and run-on comments, and a shelf price that later showed as £61.49. None of these scores is a laboratory test.
Bosch GWS 7-125
4.7 from 22,017 ratings, restart protection on the listing, and a published vibration figure, at about £71.98. Check the plug.
DEWINNER 1,000 W
About £48.99, 4.2 from 37 UK reviews, and a metal and diamond kit, if the wood blade stays in the bag.
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 the amazon.co.uk figures stored for these eleven listings. HSE duties and PUWER apply at work. They are not a certificate for a domestic grinder. A shared review block is one sample. US review text is not UK opinion.
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.
