The best cordless die grinders, compared.
Top pick: YEARTOP 12 V Best value: Dremel Lite 7760 – About £53.60, 4.6 from 1,452 reviews, 274 g, with 15 accessories and a USB lead. A details line conflicts on rpm, and torque is limited. Updated October 2026.
A cordless die grinder spins a small burr or wheel so you can deburr an edge, blend a weld, or clean rust where a disc cannot see. In the UK the same search also returns compact rotary tools. Those use a smaller collet and suit craft and light filing, not sustained steel removal. Straight bodies are often sold without a pack. A right-angle head meets a face you cannot line up with. Judge the collet before the colour of the housing. Carbide burrs in the UK are commonly 6 mm. A 1/4 inch collet is 6.35 mm. 3 mm and 1/8 inch are rotary-tool sizes. A 6 mm shank does not clamp in a different bore, and some tools marked 6 mm are 1/4 inch in practice. Check that the title and the bullets name the same battery shoe, whether a pack is in the box, and whether the speed can drop. Bits and a charge lead change what you still have to buy. Head shape, collet and battery are set out in the [cordless die grinder buying guide](/hub/tools/cordless-die-grinder/sub/cordless-die-grinder-buying-guide).
A cordless die grinder spins a small burr or wheel so you can deburr an edge, blend a weld, or clean rust where a disc cannot see. In the UK the same search also returns compact rotary tools.
36 products checked · 62 hrs invested · +18,600 readers
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Personal buying guide
Question 1 of 2
What is the job?
YEARTOP’s right-angle kit is about £59.99 with 5.0 from only two reviews, so the stars are not a settled sample. The box is the only one here that states two 12 V 2,000 mAh packs and a UK 3-pin charger, plus a 1/4 inch collet and a tungsten carbide burr. Four speeds are printed at 11,800, 16,000, 18,000 and 19,700 rpm, and the weight line is 1.21 kg while a highlight also prints 1.72 lb. Both UK reviews describe light polishing and deburring, existing 1/4 inch sanding drums and wire wheels, and wheel-arch rust a larger grinder could not reach. Neither of those two reviews states a fault, which is not the same as a long-term test. A 6 mm burr will not clamp in a 6.35 mm collet, and the packs are YEARTOP’s own 12 V system, not DeWalt, Makita or Milwaukee. Amazon ranks it under Straight Grinders even though the title says right angle.
Pros
Cons
Best for: Light rust and deburring on a face you cannot line up with, when you have no trade packs and your shanks are 1/4 inch.
Less suitable: A 6 mm burr set, or a job where two reviews are not enough evidence.
Specifications
Common questions
Is a battery included?
Yes. Two 12 V 2,000 mAh packs and a UK 3-pin charger are in the box. The packs are YEARTOP’s own system, not a DeWalt, Makita or Milwaukee slide.
What shank does this listing say it takes?
1/4 inch (6.35 mm). A 6 mm burr will not clamp in that collet.
Can the speed be lowered?
Yes. Four speeds are printed: 11,800, 16,000, 18,000 and 19,700 rpm.
At about £53.60 the Dremel Lite 7760 carries 4.6 from 1,452 reviews, the largest sample in this comparison, and the box includes the 3.6 V tool, 15 accessories and a USB cable and plug. At 274 g it is the lightest listing here, and reviewers use it for modelling, pet nails, sea glass and light filing. The highlight and the item-type name say 8,000–25,000 rpm, while a details line prints a maximum of 25 rpm, so treat the four-figure range as the working claim and the 25 rpm line as a bad field. Torque is the limit reviewers name: it cuts out if you lean on it. Runtime and a slow USB charge bother some buyers, and the spindle lock is easy to press by accident. One reviewer found that small wax burrs did not fit the EZ Twist nose, and the collet diameter is still not stated. It is the best value ready-to-run rotary kit in the table, on price and review volume, and it is a poor only-tool if the job is weld cleanup in steel.
Pros
Cons
Best for: Light craft and small filing when you want the lowest price among the well-reviewed rotary kits in this set.
Less suitable: Steel burr work that needs torque, or anyone who needs one unambiguous rpm figure on the page.
Specifications
Common questions
Is a battery included?
Yes. The 3.6 V cell is integrated, and the box includes a USB cable and plug. There is no spare pack.
What shank does this listing say it takes?
The collet diameter is not stated. One reviewer found that small wax burrs did not fit the EZ Twist nose. Do not buy 6 mm burrs for it.
Can the speed be lowered?
The highlight says 8,000–25,000 rpm. A details line says a maximum of 25 rpm. Treat the four-figure range as the working claim and the 25 rpm line as a bad field.
The Milwaukee C12RT-0 is about £49.95 bare, 4.6 from 316 reviews, with a stated 1/8 inch collet and a variable range of 5,000–32,000 rpm. The title says the tool is naked, with no battery and no charger, so that price only makes sense if you already keep M12 packs. At 590 g it sits between the Dremel Lite and the 1.5 kg straight bodies, and a bullet also prints 1.3 lb and 9.5 inches long. Reviewers use it in gaps an angle grinder cannot reach, including rust in a vehicle and pipework, and some report DIY cut-off and weld cleanup with a carbide burr when the shank fits. The collet felt too small for some bits, an early review mentions vibration and play in the nose, and no flex shaft is in the box. One buyer was refused extended-warranty registration for an Amazon purchase. A Best Sellers Rank line in the file says Rotary Hammers, which does not describe this rotary tool, and a 6 mm burr will not enter a 1/8 inch collet.
Pros
Cons
Best for: You already own M12 packs and you want a compact rotary tool for tight metal, with 1/8 inch accessories.
Less suitable: A first tool with no packs, or a tin of 6 mm carbide burrs.
Specifications
Common questions
Is a battery included?
No. The title says the tool is naked, without a battery or a charger. One M12 pack is required.
What shank does this listing say it takes?
1/8 inch. A 6 mm burr will not enter that collet.
Can the speed be lowered?
Yes. The listing states a variable range of 5,000–32,000 rpm.
The Dremel 8150 on amazon.co.uk is about £67.15, rated 4.6 from 259 reviews, and it is a 7.2 V brushless rotary tool with an integrated cell and a USB-C cable rather than a slide pack. The listing states 5,000–30,000 rpm and 430 g, and reviewers use it for small cutting, sanding and sharpening, often mentioning the nose light and cordless use. Several say it feels easier than the mains Dremel they replaced, though one UK review calls the battery life short and notes there is no hanging loop. The tool does not run while the USB-C lead is charging, so a flat cell stops the job until you unplug it. The collet diameter is not printed, which means a 6 mm carbide burr is the wrong assumption until you check the nose. It is the top pick in this set because the review file is large and the kit is ready to use, not because it will blend a steel weld the way a straight 6 mm grinder is meant to.
Pros
Cons
Best for: Short craft, model and light metal jobs when you want a charged rotary kit around £67 and you will match Dremel-size accessories.
Less suitable: Sustained steel deburring with 6 mm burrs, or a bench where you need a spare battery you can swap.
Specifications
Common questions
Is a battery included?
The cell is built in. The box includes a USB-C cable and no separate pack to swap.
What shank does this listing say it takes?
The collet diameter is not stated. Do not assume a 6 mm burr fits until you check the nose.
Can the speed be lowered?
Yes. The listing states a variable range of 5,000–30,000 rpm.
JOJOCY’s straight body is about £42.99, 4.4 from 11 reviews, and the listing says it takes Milwaukee 18 V packs including the 48-11 series named on the page. No battery is included, the stated weight is 1.51 kg, and the only speed in the file is 24,000 rpm with no minimum. The package line lists a 3 mm chuck and two wrenches, while a bullet mentions 6 mm bits that are not in that package list, so the collet is not settled. UK reviewers call it strong for the price on first use and useful as a cheap backup on packs they already owned. They also say it may not last and that the colour is not a Milwaukee warranty. A printed horsepower field of 630 is not a checked wattage, and a single top speed is a weak match for plastic or a fine burr.
Pros
Cons
Best for: A spare straight body for Milwaukee 18 V packs on a short job, after you confirm which chuck is actually in the box.
Less suitable: Plastic, a fine burr, or anyone who needs a speed they can lower.
Specifications
Common questions
Is a battery included?
No. The listing says it takes named Milwaukee 18 V packs. Those packs are not in the box, and the colour is not a Milwaukee warranty.
What shank does this listing say it takes?
The package line lists a 3 mm chuck. A bullet mentions 6 mm bits that are not in that package list. Confirm the chuck before you buy burrs.
Can the speed be lowered?
No minimum is stated. The only speed in the file is 24,000 rpm.
The Dremel 8240 is the dearest kit in the file at about £94.94, with 4.2 from 89 reviews, a 12 V 2 Ah pack and charger, and a stated range of 5,000–35,000 rpm at 483 g. A bullet says the 12 V pack is compatible with the Bosch 12 V system, which is a listing claim rather than a Bosch warranty. Reviewers like cordless use, including with a flex shaft, and jobs that reuse accessories they already owned, and one UK review says the battery lasts well and charges fairly quickly. The same file records a return because it felt heavy and large for small hands, an intermittent start with three flashing lights, a scraping noise from first use, and one unit described as already used. The collet size is not in the product details, so do not assume a 6 mm die-grinder shank. Choose it when you want the separate 12 V pack and the higher top speed, and skip it if about £95 is hard to justify against the 8150 and the Lite in this table.
Pros
Cons
Best for: You want a 12 V Dremel kit with a separate pack and you already use that accessory range.
Less suitable: A first cheap steel grinder, or smaller hands that found a lighter rotary tool easier.
Specifications
Common questions
Is a battery included?
Yes. The box includes a 12 V 2 Ah pack and a charger. A bullet says the pack is compatible with the Bosch 12 V system. That is a listing claim, not a Bosch warranty.
What shank does this listing say it takes?
The collet diameter is not stated. Do not assume a 6 mm die-grinder shank.
Can the speed be lowered?
Yes. The listing states a variable range of 5,000–35,000 rpm.
ConBlom’s bare straight grinder is about £39.99 with 4.0 from 11 ratings on the amazon.co.uk capture, and the listing says it fits DeWalt 18 V and 20 V MAX packs such as DCB200–DCB206. The collet line is 1/4 inch, also written as a 6.35 mm drill chuck, with three speeds from 15,000 to 25,000 rpm and a weight of 1.66 kg. The highlight says bare tool, and there is no bit list, so you still buy the burrs. The written reviews in the file are from Canada, so they are not a UK sample: those texts call it handy if you already own DeWalt packs, and they also say it was noisy, one pack died, and one unit stopped after about five minutes. Treat the 11-star line as the UK listing figure and the stories as non-UK. A 6 mm burr will not seat in a 1/4 inch collet, and a Canada comment that there is no spindle lock is not a UK rate.
Pros
Cons
Best for: You own DeWalt packs and you will buy 1/4 inch burrs, knowing the written reviews in this file are not from the UK.
Less suitable: A first kit with no packs, a 6 mm burr set, or a decision that needs UK review text.
Specifications
Common questions
Is a battery included?
No. The highlight says bare tool. The listing names DeWalt 18 V and 20 V MAX packs such as DCB200–DCB206. That is a listing claim, not a DeWalt warranty.
What shank does this listing say it takes?
1/4 inch, also written as a 6.35 mm drill chuck. A 6 mm burr will not seat in it.
Can the speed be lowered?
Yes. Three levels are stated, from 15,000 to 25,000 rpm.
The luolety straight grinder is about £45.99, 3.3 from seven reviews, sold as a bare body for Makita 18 V packs BL1830–BL1860B. Four speeds are stated, with a details minimum of 17,240 rpm and a maximum of 24,000 rpm, at 1.53 kg, and the manufacturer line prints divinge rather than luolety. The shank line says 6 mm, then also describes a 3 mm and 6 mm chuck, and the package includes a 3 mm chuck, so you should not order burrs until the tool is in your hand. Of the two UK reviews kept in the file, one says it arrived working and felt like a Makita, and the other says the gears broke within two minutes and the tool was returned. That split, on seven ratings, is the reason it sits low, and colour is not a Makita warranty. No battery or charger is in the box.
Pros
Cons
Best for: A Makita 18 V owner who will check the collet on day one and can use the return window.
Less suitable: Anyone who needs a consistent UK sample, or a 6 mm burr bought before the chuck is confirmed.
Specifications
Common questions
Is a battery included?
No. The listing says Makita 18 V packs BL1830–BL1860B. No battery or charger is in the box, and the colour is not a Makita warranty.
What shank does this listing say it takes?
The shank line says 6 mm, and it also describes a 3 mm and 6 mm chuck. The package includes a 3 mm chuck. Do not order burrs until the tool is in your hand.
Can the speed be lowered?
Four speeds are stated. The details line gives a minimum of 17,240 rpm and a maximum of 24,000 rpm.
Kocusu’s straight body is about £50.34 with no star line in the captured file, so there is no UK review count to lean on. The listing says it takes DeWalt 20 V packs DCB200–DCB206, with four speeds up to 26,000 rpm, a brushless motor and a weight of 1.58 kg, and the bullet says the battery is not included. Adapters are listed as 3 mm and 6.35 mm, and the bits as ten 6 mm pieces, but the collet bore itself is not named. A 6 mm bit plus a 6.35 mm adapter does not tell you which shank actually clamps. Dimensions are printed as 45 × 13 × 45 cm, which reads as a carton size rather than the tool in your hand. At this price, with no reviews, you are paying more than the other bare straight bodies in the table for a shell this capture has not rated.
Pros
Cons
Best for: You own DeWalt packs and you will inspect the collet on arrival, because there are no reviews in this file to read.
Less suitable: A first die grinder, or any purchase that depends on UK buyer comments.
Specifications
Common questions
Is a battery included?
No. The bullet says the battery is not included. The listing names DeWalt packs DCB200–DCB206. That is a listing claim, not a DeWalt warranty.
What shank does this listing say it takes?
Adapters are listed as 3 mm and 6.35 mm, and the bits as ten 6 mm pieces. The collet bore itself is not named, so do not assume which shank clamps.
Can the speed be lowered?
Four speeds are stated, with a maximum of 26,000 rpm. No minimum is printed.
LengSuaa is the cheapest straight body in the file at about £39.99, and it has no star line. Four speeds from 8,000 to 26,000 rpm, a brushless claim, five 6 mm bits and two wrenches are the useful lines, at a stated 1.5 kg with no battery. The title says DeWalt 18 V / 20 V and one bullet says Makita 18 V BL1830–BL1860B, so the shoe is not identified. The collet bore is not named even though the bits are described as 6 mm. There are no review themes to say whether either pack actually fits or whether the gears survive a first cut. Leave it until the live amazon.co.uk page names one platform in both the title and the bullets.
Pros
Cons
Best for: Only a shopper who will not check out until the live title and the bullets name the same battery shoe.
Less suitable: Anyone who needs a known DeWalt or Makita fit, or a tool with UK reviews.
Specifications
Common questions
Is a battery included?
No. The title says no battery. The title also says DeWalt 18 V / 20 V, while one bullet says Makita 18 V. The shoe is not identified.
What shank does this listing say it takes?
Five 6 mm shank bits are listed. The collet bore is not named. Match the accessory only after you see the collet.
Can the speed be lowered?
Yes. Four speeds are stated, from 8,000 to 26,000 rpm.
Ten amazon.co.uk listings were scored from the stored pages and the review notes already on file. There is no laboratory test. Stars and review counts are the listing line. A review written outside the UK does not count as UK opinion. The highest score is the top pick. Best value is the ready kit with the large review file at the lower shelf price, not the cheapest bare body. One of each. The score does not mean the highest tool is the one for sustained steel removal. The weights below sum to 100.
Amazon stars and volume
40%Stars out of 5, scaled to 40, then a volume factor: no reviews score 0; 1–9 reviews × 0.35; 10–49 × 0.65; 50–199 × 0.85; 200 or more × 1. Minus 4 if the written reviews in the file are not from the UK.
Spec fit
25%A named collet scores 8, a partial or conflicting line 3, an unnamed bore 0. A stated speed range or gears score 8, conflicting rpm figures 4, a single speed 2. One consistent battery shoe scores 9. A title-versus-bullet conflict scores 0.
What is in the box
20%A battery scores 8, a charger or charge cable 6, and bits or a second collet 6. A chuck with no bits scores 3. A bare genuine tool with no accessories scores 4. A third-party bare tool with no bits scores 0.
Price against the box
15%A kit under £70 with at least 200 reviews scores 15. A kit under £70 with a thin review file scores 8. A bare genuine tool under £55 with at least 200 reviews scores 12. A kit over £90 scores 6. A third-party body under £50 with some UK reviews scores 8, or 6 if the written texts are not from the UK. A bare body with no reviews scores 4. A platform conflict scores 0.
Buy the collet and the battery shoe before you buy a star line. A 6 mm shank does not fit a 1/4 inch or 1/8 inch nose. A bare body still needs a pack. A title and a bullet that name different shoes are not a match. No listing here is a laboratory test, and none is scored as safer.
A cordless die grinder spins a burr or a small wheel so you can deburr, blend a weld, or clean rust where a disc cannot see. On amazon.co.uk the same shelf also lists compact rotary tools. A straight body reaches a port or an edge. A right-angle head meets a face you cannot line up with. A compact rotary tool fits engraving, models and light sanding, and it is a poor only-tool for weld cleanup in steel. Collet comes before the name on the housing. 6 mm is the usual UK carbide-burr size.
A 6 mm shank does not clamp in a 1/4 inch (6.35 mm) collet and will not enter a 1/8 inch collet. Some tools marked 6 mm are 1/4 inch in practice. Read the collet line before you order burrs.
One straight body says DeWalt in the title and Makita 18 V in a bullet. That shoe is unverified. DeWalt 18 V and 20 V MAX are one class. Makita 18 V, Milwaukee 18 V and M12 do not interchange.
The Dremel Lite is the lightest kit here and reviewers use it for modelling and light filing. They also say it cuts out if you lean on it. It is a poor only-tool for weld cleanup in steel.
Choose the head for the face you can actually reach. A straight body lines up with a port or an edge. A right-angle head, as on the YEARTOP kit, meets a surface you cannot square up to. A compact rotary tool is for engraving, models and light sanding. It is a poor only-tool if the job is weld cleanup in steel. Then match the collet, before the brand on the housing. 6 mm is the usual UK carbide-burr size. 6.35 mm is 1/4 inch. 3 mm and 1/8 inch are rotary-tool sizes.
A platform only helps if the title and the bullets name the same shoe, and if you either own that pack or the box includes one. DeWalt 18 V and 20 V MAX are one slide-pack class. Makita 18 V, Milwaukee 18 V and M12 do not interchange. LengSuaa’s title says DeWalt and one bullet says Makita 18 V, so that shoe is unverified. Bare bodies exclude the battery. Only the YEARTOP kit states a UK 3-pin charger, with two 2,000 mAh packs.
Three typical situations, each with a recommendation from this comparison.
You want small cutting, sanding and sharpening, and you do not already own a slide pack. The Dremel 8150 is the top pick at about £67.15: 7.2 V brushless, 5,000–30,000 rpm, 430 g, USB-C, and 4.6 from 259 reviews. The collet size is not stated, and the cell does not swap.
The job is modelling, light filing or a small cut, and you want the largest review file. The Dremel Lite 7760 is best value at about £53.60: 274 g, 15 accessories, a USB lead, and 4.6 from 1,452 reviews. Torque is limited, and a details line prints 25 rpm against an 8,000–25,000 rpm highlight.
You already keep M12 packs and the bits are 1/8 inch. The Milwaukee C12RT-0 is about £49.95 bare, variable 5,000–32,000 rpm, 590 g, and 4.6 from 316 reviews. No battery or charger is in the box. A 6 mm burr will not enter the collet.
The top pick is the Dremel 8150 at about £67.15: 4.6 from 259 reviews, a stated 5,000–30,000 rpm band, a brushless claim and a USB-C kit at 430 g. The collet size is not on the page, and the cell does not swap. It leads on review evidence and a ready kit, not as a 6 mm steel grinder. Best value is the Dremel Lite 7760 at about £53.60, 4.6 from 1,452 reviews, with the tool, 15 accessories and a USB lead in the box. It does not take the top pick because a details line says 25 rpm and reviewers describe limited 3.6 V torque. The Milwaukee C12RT-0 is cheaper as a bare tool and still needs an M12 pack, so it is not the value kit. None of these scores is a laboratory test, and none of these listings is scored as safer.
Dremel Lite 7760
About £53.60, 4.6 from 1,452 reviews, 274 g, with 15 accessories and a USB lead. A details line conflicts on rpm, and torque is limited.
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 used for this page in October 2026. Prices, stars and review counts are the stored amazon.co.uk extracts, not a live check. A review on amazon.ca is not a UK count. HSE noise, vibration and PUWER figures apply at work. They are not a certificate for a domestic tool, and none of these listings is scored as safer.
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.
