Search for a cordless cut off tool and you will be shown two machines that do overlapping jobs at very different sizes. A dedicated cut off tool spins a three inch wheel and exists to reach into places a larger tool cannot, cutting bolts behind a bracket or a pipe against a wall. An angle grinder spins a four and a half or five inch wheel, cuts deeper, grinds as well as cuts, and needs room to work. Our top pick is the Makita XAG04Z for covering both roles competently with a brushless motor. This shortlist of 8 cordless cut off tool options from Makita, DEWALT, Milwaukee and more separates the two types and covers the wheel and guard rules that keep the job safe.
Every tool here is a current listing with real customer ratings behind it. For related workshop equipment, see our tools and home improvement guides.
Pros
- Cuts and grinds, so one tool covers both roles
- Brushless motor holds speed under load
- Established platform with a very wide tool range
- Takes both 4-1/2 and 5 inch wheels
- Electric brake stops the wheel quickly
Cons
- Bare tool, so battery and charger cost extra
- Needs clear space around the work, unlike a 3 inch tool
The XAG04Z takes the top spot because it covers both jobs properly. It cuts with a thin wheel, grinds with a thick one, cleans welds with a wire cup, and takes a diamond wheel for masonry, which makes it the more useful single purchase for anyone starting from nothing.
The brushless motor matters more on a grinder than on most tools. Cutting metal is among the heaviest loads a cordless tool sees, and a motor that senses load and holds speed produces a straighter cut with less wheel wear than one that bogs down and has to be backed off.
Two practical points. It is a bare tool, so a battery and charger are additional unless you already own them, and being a full size grinder it needs room around the work. Access problems that tempt people to remove a guard are better solved by a three inch tool than by this one.
Bottom line: the best all round metalworking choice here, provided the platform suits you.
- Voltage: 18V platform
- Motor: brushless
- Wheel size: 4-1/2 or 5 inch
- Functions: cutting and grinding
- Brake: electric wheel brake
- Guard: rotatable
- Supplied: bare tool, no battery or charger
Confirm you own or intend to buy packs on this platform, since a bare tool is excellent value only in that case.
Buy the correct wheels for each job rather than one type for everything: thin cut off wheels for cutting, thick wheels for grinding, and material specific wheels for stainless and masonry.
Check every wheel's printed maximum speed against the tool's no load speed before fitting, and never fit a wheel rated lower than the tool.
Remove the battery before changing a wheel, keep the guard fitted and rotated away from your face, and wear eye protection every time.
Pros
- Three inch wheel reaches confined spaces with guard fitted
- Brushless motor for efficiency under load
- One handed operation in tight positions
- Compact body fits engine bays and behind brackets
- Established twenty volt platform
Cons
- Bare tool, battery and charger extra
- Shallow cut depth of around one inch
This is the access specialist. A three inch wheel and a slim body let it get to a seized bolt behind a bracket or a pipe close to a wall with the guard still in place, which is exactly the situation where people take the guard off a larger grinder and get hurt.
It works one handed, which matters when the other hand is holding a torch or steadying the work, and the brushless motor keeps speed as the wheel bites rather than stalling.
The limits are inherent. Cut depth is around an inch, so this handles bolts, threaded rod, thin tube, sheet, and light angle iron, and nothing thicker. It is also a bare tool, so factor in a battery and charger if you are not already on the platform.
Bottom line: buy it because a grinder will not fit, not as a first metalworking tool.
- Voltage: 20V MAX platform
- Motor: brushless
- Wheel size: 3 inch
- Cut depth: approximately 1 inch
- Operation: one handed
- Guard: rotatable
- Supplied: bare tool
Anyone who already owns a grinder and keeps meeting cuts it cannot reach, plus mechanics and plumbers working in confined spaces.
Someone buying a first metalworking tool should choose an angle grinder for its greater versatility.
Support the workpiece so the cut opens rather than closes, since thin wheels pinch easily and kickback follows.
Remove the battery before changing wheels, and check the wheel speed rating against the tool, which spins faster than a larger grinder.
Pros
- Twelve volt platform keeps it light and slim
- Excellent access in very confined spaces
- Comfortable for extended one handed use
- Established compact tool platform
- Deep rating history among compact cut off tools
Cons
- Twelve volt packs give fewer cuts per charge
- Bare tool, battery and charger extra
Where the twenty volt compact tools are small, this twelve volt version is smaller still, and in this category size is capability. A slimmer body reaches cuts that a slightly larger tool cannot, and it is light enough to hold at an awkward angle or overhead without fatigue.
For a mechanic or plumber making short cuts in confined positions, that combination is worth more than raw power, and the platform has a wide range of other compact tools that share the same packs.
The trade is energy. Twelve volt packs hold less, so cuts per charge are fewer and heavier work drains them quickly. It is also a bare tool, so budget for a pack and charger unless you already own them.
Bottom line: the best pick for the tightest access and lightest handling, at the cost of runtime.
- Voltage: 12V compact platform
- Wheel size: 3 inch
- Body: slim, one handed
- Guard: rotatable
- Weight: lightest option here
- Supplied: bare tool
- Best for: confined and overhead cuts
Trades working in confined spaces where every millimetre of tool width matters, and anyone making short repeated cuts one handed.
Anyone cutting thicker stock or working through a long list of cuts should choose an eighteen or twenty volt tool.
Let a small pack cool between heavy cuts rather than working straight through, since twelve volt cells heat quickly under this load.
Keep the guard fitted and rotated away from your face, and check the wheel rating against the tool's speed.
Pros
- Paddle switch stops the tool if it is dropped or wrenched away
- Brushless motor holds speed under load
- Highest customer rating among the grinders here
- Established twenty volt platform
- Cuts and grinds with the right wheel
Cons
- Needs clear space, unlike a three inch tool
- Check whether your listing includes a battery
The paddle switch is the reason this grinder deserves attention. Release it and the tool stops, which means a grinder that gets wrenched out of your hands by kickback shuts itself off rather than continuing to spin on the floor. That is a genuine safety feature rather than a convenience.
Beyond that it is a capable general purpose grinder: brushless, four and a half inch capacity, cuts with a thin wheel and grinds with a thick one, on a platform with a very wide range of other tools.
The considerations are those of any full size grinder. It needs space around the work, so confined cuts belong to a three inch tool, and you should confirm whether the particular listing includes a battery and charger or is a bare tool.
Bottom line: the grinder to choose if safety features rank high on your list.
- Voltage: 20V MAX platform
- Motor: brushless
- Wheel size: 4-1/2 inch
- Switch: paddle, stops on release
- Functions: cutting and grinding
- Guard: rotatable
- Platform: wide tool range
A sensible choice for anyone new to grinders, since the paddle switch removes one of the ways these tools cause injuries.
Practise on scrap first with the guard positioned so sparks travel away from you, and get used to how the tool pulls before working on anything that matters.
Keep both hands on the tool, use the side handle, and support the work so the cut cannot pinch the wheel.
Never remove the guard for access. Rotate it instead, and use a smaller tool if the cut still cannot be reached.
Pros
- Brushless motor in a consumer priced compact tool
- Very wide and affordable platform tool range
- Multi material wheel capability
- Compact for confined access
- Battery packs widely available
Cons
- Consumer platform is less robust than trade brands
- Shallow cut depth as with all three inch tools
This is the compact cut off tool for people on a consumer platform rather than a trade one, and the platform argument is strong: this system has one of the widest and most affordable tool ranges available, so packs you own already work and the next tool is cheap.
A brushless motor at this level is a real advantage, keeping speed under load in a category where cheap brushed tools stall, and the three inch multi material wheel covers metal and light masonry.
The reservation is duty. Consumer platforms are built for intermittent use rather than all day trade work, so someone cutting metal daily will wear this faster than a trade tool. For occasional and home workshop use, that trade is entirely reasonable.
Bottom line: the best compact cut off tool for a home workshop already on this platform.
- Voltage: 18V consumer platform
- Motor: brushless
- Wheel size: 3 inch multi material
- Body: compact, one handed
- Guard: rotatable
- Platform: very wide tool range
- Duty: intermittent and home use
Home workshops already invested in this battery platform, and anyone wanting brushless performance without trade tool prices.
Daily trade users will get longer life from a professional platform tool.
Match the wheel to the material rather than relying on one multi material wheel for everything, particularly for stainless work where contaminants leave rust spots.
Remove the battery before wheel changes and keep the guard fitted at all times.
Pros
- Supplied as a kit, so no separate battery purchase
- Brushless motor in a twelve volt compact body
- Excellent access in confined spaces
- Light for extended one handed use
- Trade platform build quality
Cons
- Twelve volt runtime limits sustained cutting
- Higher cost than consumer equivalents
This is the compact cut off tool to buy if you are not already on a platform, because it arrives as a kit with a battery and charger rather than as a bare tool. That changes the real cost comparison considerably against the bare tools elsewhere in this shortlist.
The tool itself pairs a brushless motor with a twelve volt compact body, so it holds speed under load while staying small enough for genuinely tight access, and it is built to trade standards rather than consumer ones.
The constraint is the same as for any twelve volt tool doing heavy work: runtime. Cutting metal draws hard on a compact pack, so a long list of cuts means a second battery. And trade platform pricing is higher than consumer equivalents.
Bottom line: the best complete package here for confined cutting, and the sensible pick if you own no packs yet.
- Voltage: 12V trade platform
- Motor: brushless
- Wheel size: 3 inch
- Supplied: kit with battery and charger
- Body: compact, one handed
- Guard: rotatable
- Build: trade specification
Compare total cost honestly. A kit like this often costs less than a cheaper bare tool plus a battery and charger bought separately.
If you expect a long list of cuts in one session, budget for a second pack rather than expecting one compact battery to last.
Let packs cool between heavy cuts, and store them indoors rather than in a cold van over winter.
Check every wheel's speed rating against the tool before fitting, and keep the guard on and positioned away from your face.
Pros
- Brushless motor at kit level pricing
- Three speed settings up to 9500rpm
- Two 4.0Ah batteries included in the kit
- Two protective wheel guards supplied
- Complete kit with no platform commitment
Cons
- Standalone platform with few other tools
- Lower maximum speed than trade grinders
The AOBEN kit is the value pick and it is stronger than its price suggests, because it carries a brushless motor rather than the brushed one usually found at this level. On a cordless grinder that matters: less energy lost to friction means more cuts per charge and better speed under load.
Three speed settings up to 9500rpm let you slow down for thin sheet and delicate work rather than running flat out, and the kit arrives complete with two 4.0Ah packs, a charger, a case, and two guards for cutting and grinding.
The limitations are platform and speed. This is a standalone system, so there is no path to cheaper additional bare tools later, and its maximum speed is below the trade grinders here, which on heavy cutting means a slower pace.
Bottom line: the best complete kit here for someone with no cordless platform, and better specified than its price implies.
- Voltage: 21V standalone platform
- Motor: brushless
- Speeds: three settings, up to 9500rpm
- Wheel size: 4-1/2 inch
- Supplied: two 4.0Ah batteries, charger, case
- Guards: two, for cutting and grinding
- Protection: overcurrent, overvoltage, temperature
Households needing a grinder for occasional jobs who own no cordless platform and want everything in one box.
Anyone who expects to buy more cordless tools should join an established platform instead, even at higher initial cost.
Use the lower speed settings on thin sheet and on delicate work. A grinder run flat out on thin material cuts through and keeps going into whatever is behind it.
Fit the correct guard for the job: the kit supplies one for cutting and one for grinding, and they are not interchangeable.
Pros
- Mini format handles small detail work
- Complete kit with battery included
- High rotational speed for small wheels
- Light and easy to control one handed
- Low cost entry to cordless grinding
Cons
- Brushed motor and limited sustained power
- High speed demands careful wheel rating checks
This mini grinder occupies the light end of the category, suited to small detail cuts, deburring, and tidying welds rather than to structural metalwork. Its size and weight make it easy to control one handed on delicate work where a full grinder is unwieldy.
It arrives as a kit with a battery, so there is no platform decision and nothing else to buy.
Two cautions matter here more than elsewhere. The stated speed of nineteen and a half thousand revolutions per minute is high, and small wheels must carry a maximum speed rating equal to or above it, which rules out any wheel intended for a slower larger grinder even where the arbor fits. And a brushed motor at this size has limited sustained power, so it is a light duty tool rather than a small version of a full grinder.
Bottom line: a useful light detail tool, not a substitute for a four and a half inch grinder.
- Format: mini angle grinder
- Rated voltage: 16.8V
- Rated speed: 19500rpm
- Disc: 76mm diameter, 10mm bore
- Switch: side self locking start
- Disc change: spindle lock
- Supplied: multiple disc types and battery
Hobby metalwork, model making, deburring, and small detail cuts where a full size grinder is too much tool.
Anyone cutting structural metal, thick stock, or masonry needs a four and a half inch grinder instead.
Check the wheel's printed maximum speed against the tool's high rated speed before every fitting. This is the tool in this shortlist where a mismatched wheel is most likely.
Keep the guard fitted, wear eye protection, and remove the battery before changing wheels.
How to Choose a Cordless Cut Off Tool
The first section decides which tool you are actually shopping for. The wheel and guard sections are the ones that matter for safety.
Two Different Tools Share This Name
A compact cut off tool uses a three inch wheel and a slim body. Its whole purpose is access: cutting a seized bolt behind a bracket, trimming a pipe close to a wall, or reaching into an engine bay where a larger tool will not fit. It cuts shallow because a three inch wheel cannot reach deep, and it is far easier to control one handed.
An angle grinder takes a four and a half or five inch wheel and is a general purpose metalworking tool. It cuts deeper, removes material with a grinding wheel, cleans welds with a wire cup, and takes a diamond wheel for masonry. It also needs both hands and clear space around the work.
Both appear in this shortlist because both answer the search. If you already own an angle grinder and are frustrated by access, buy a compact cut off tool. If you own nothing, an angle grinder is the more versatile first purchase and a three inch tool is the specialist you add later.
Cut-Off Wheels and Grinding Wheels Are Not Interchangeable
This is the most important paragraph here. A cut off wheel is thin, typically about a millimetre, and designed to take force on its edge only. A grinding wheel is thick, often three or four times that, and designed to take force on its face. The ZFULVO kit states the difference plainly on its own packaging: a cutting sheet at 0.05 inches against a polishing sheet at 0.16 inches. Using each for its own job is fine. Using a grinding wheel to cut, or applying side pressure to a cut off wheel, is how wheels shatter.
A wheel breaking apart at twenty thousand revolutions per minute sends fragments outward at speed, which is why the guard exists and why eye protection is not negotiable. The failure is sudden and gives no warning.
Match the wheel to the material as well. Wheels for ferrous metal, for stainless, for aluminium, and for masonry are different products, and a stainless specific wheel is free of iron and sulphur contaminants that would leave rust spots on stainless work.
The Wheel’s Speed Rating Must Meet the Tool’s
Every abrasive wheel carries a maximum safe rotational speed printed on its label, and every tool has a no load speed in its specification. The wheel’s rating must be equal to or higher than the tool’s speed. Fitting a wheel rated below the tool is the single most direct way to cause a burst.
This catches people out because smaller wheels spin faster. A three inch tool may run at twenty thousand revolutions per minute where a four and a half inch grinder runs at eleven thousand, so wheels bought for one are not automatically safe on the other even where the arbor fits.
Check the expiry date too. Bonded abrasive wheels have a shelf life, usually stamped as a date, because the resin binder degrades. A wheel found at the back of a drawer from years ago belongs in the bin rather than on a tool.
Brushless Motors and Battery Draw
Cutting metal is one of the most demanding things you can ask a cordless tool to do, so motor efficiency matters more here than in a drill. A brushless motor loses less energy to friction, holds speed better under load, and has one fewer wearing part.
In practice the difference shows in cuts per charge and in how the tool behaves as the wheel bites. A brushed motor bogs down and needs backing off, while a brushless one senses the load and holds its speed, which produces a straighter cut and less wheel wear.
Pack size matters alongside motor type. A small compact battery on a grinder will produce a handful of cuts and get warm doing it, so if metalworking is a regular job rather than an occasional one, plan on larger packs.
Bare Tool or Kit, and the Platform You Join
Several tools here are sold as bare tools, meaning no battery and no charger. That is excellent value if you already own packs on the same platform and poor value if you do not, and the listing title is the only place this is stated.
The platform decision outlasts the tool. Batteries are the expensive part of any cordless system, so the brand you commit to determines what your next tool costs. Established platforms have far wider tool ranges, which is the practical argument for them over cheaper standalone kits.
Voltage classes matter within a platform as well. A twelve volt compact tool and an eighteen or twenty volt tool from the same brand generally use different packs, so owning one does not always mean the other is a bare tool purchase for you.
The Guard Is Not Optional
The guard on these tools is positioned to stand between a bursting wheel and the operator, and it is the only thing doing that job. Removing it to reach an awkward cut is common and it is the decision behind a large share of serious injuries with these tools.
Guards rotate on nearly every model so the opening can be positioned away from your face and away from anything flammable. Use that adjustment instead of removing the guard, and if a cut genuinely cannot be reached with a guard fitted, that is a sign the wrong tool is being used rather than a reason to take it off.
This is also where a three inch tool earns its place. Access problems that tempt people to remove a grinder guard are usually solved properly by a smaller tool that fits with its guard intact.
Kickback, and Which Way the Sparks Go
Kickback happens when a cut closes on the wheel and the wheel is thrown out of the slot, taking the tool with it. Thin cut off wheels are especially prone to it because a workpiece that flexes will pinch them. The defences are supporting the work so the cut opens rather than closes, never cutting freehand on something that can move, and keeping a firm two handed grip on a grinder.
Paddle switches, as on the DEWALT grinder here, are a real safety feature rather than a convenience. Release the paddle and the tool stops, which means a tool wrenched out of your hand shuts itself off instead of continuing on the floor.
Sparks travel a long way. Position yourself and the guard so the stream goes away from your body, away from anything that can catch, and away from other people. Metal sparks land on carpet and in sawdust and smoulder for a long time before anyone notices.
Wheel Diameter Decides Cut Depth
Maximum cut depth is roughly the wheel radius minus the guard and flange, so a three inch wheel cuts around an inch deep and a four and a half inch wheel around an inch and a half. That difference decides which jobs are possible.
For bolts, threaded rod, thin tube, sheet, and light angle iron, three inches is plenty. For thicker stock, larger pipe, or paving slabs, a larger wheel is not a preference but a requirement, and trying to cut deeper than the wheel allows means grinding the guard or plunging the arbor into the work.
Remember that wheels wear down. A cut off wheel loses diameter as it is used, so the depth available shrinks over the wheel’s life and a job that fitted with a new wheel may not with a worn one.
Wheel Changing and Spindle Locks
Wheels are consumable and get changed often, so how easy that is affects the tool daily. A spindle lock button holds the arbor still while you loosen the flange nut, and a supplied wrench that fits properly is the difference between a thirty second change and a fight.
Tool free flange nuts appear on some models and are genuinely useful, letting a wheel change happen without hunting for the wrench that went missing months ago.
Whatever the mechanism, remove the battery before changing a wheel. An accidental trigger pull with fingers on the wheel is exactly as bad as it sounds, and taking the pack out costs two seconds.
Dust, Sparks, and What Is Behind the Work
Cutting metal produces hot metal dust and cutting masonry produces silica dust, and the two need different precautions. Silica is the more serious: dry cutting concrete, brick, or stone releases respirable crystalline silica, which is a recognised occupational hazard requiring a proper respirator rather than a paper mask.
Before starting any cut, look at what is behind the work. A wheel that goes through a bolt continues into whatever is beyond it, and cutting into a wall means considering pipes and cables you cannot see.
Wear eye protection every time, without exception, plus gloves and hearing protection. Metal cut with an abrasive wheel also stays hot enough to burn for longer than people expect, so let offcuts cool rather than picking them up.
| Model | Type | Wheel | Motor |
|---|---|---|---|
| Makita XAG04Z | Cut-off and angle grinder | 4.5 or 5 inch | Brushless |
| DEWALT 20V MAX XR | Compact cut-off tool | 3 inch | Brushless |
| Milwaukee 2522-20 M12 | Compact cut-off tool | 3 inch | Compact 12V |
| DEWALT 20V MAX grinder | Angle grinder, paddle switch | 4.5 inch | Brushless |
| RYOBI ONE+ HP | Compact cut-off tool | 3 inch multi material | Brushless |
| Milwaukee M12 FUEL | Compact cut-off tool | 3 inch | Brushless |
| AOBEN 21V | Angle grinder kit | 4.5 inch | Brushless, 3 speeds |
| ZFULVO mini | Mini angle grinder kit | 76mm disc | Brushed, 19500rpm |
For other workshop tools on cordless platforms, browse our tools guides.
Why You Should Trust Us
We separate compact cut off tools from angle grinders because they answer different problems, and we lead with wheel selection and guard use because those are where this category carries real risk. Every tool here is a current listing with enough customer rating history to show how it holds up under sustained cutting.
We do not accept payment for placement, and we state plainly which tools are sold as bare tools, since that detail changes the real cost substantially for anyone not already on the platform.
Final Thoughts
The Makita XAG04Z is our best overall pick because it handles both cutting and grinding with a brushless motor on an established platform, which makes it the more versatile choice for anyone buying one tool for metalwork.
The AOBEN kit is our best value choice for someone who owns no platform and wants a working grinder with a battery and charger included, and it carries a brushless motor and three speed settings, which is more than its price suggests. If access is your actual problem, the DEWALT 20V MAX XR compact cut off tool reaches places a grinder cannot with its guard still fitted, and the Milwaukee M12 FUEL is the pick on the twelve volt side for one handed work in tight spaces.
Whatever you buy, match the wheel to the job and to the tool’s speed, keep the guard on, and check what is behind the cut before starting. More workshop gear is in our latest guides.
Frequently Asked Questions
What is the difference between a cordless cut off tool and an angle grinder?
Size and purpose. A compact cut off tool spins a three inch wheel and exists for access, cutting bolts and pipes in places a larger tool cannot reach, and it works one handed. An angle grinder takes a four and a half or five inch wheel, cuts deeper, and also grinds and cleans welds, but it needs both hands and clear space.
Can I use a grinding wheel to cut in 2026?
No. A cut off wheel is thin and built to take force on its edge, while a grinding wheel is thick and built to take force on its face. Using either against its design, or putting side pressure on a thin cut off wheel, is how wheels shatter, and a wheel breaking at twenty thousand revolutions per minute gives no warning.
How do I know a wheel is safe on my tool?
Compare the maximum speed printed on the wheel against the tool’s no load speed in its specification, and the wheel’s rating must be equal or higher. Smaller wheels spin faster, so wheels bought for a three inch tool are not automatically safe on a larger grinder or the reverse. Check the wheel’s expiry date as well, since resin binders degrade.
Is it ever acceptable to remove the guard?
No. The guard is the only thing between a bursting wheel and the operator, and removing it for access is behind a large share of serious injuries with these tools. Rotate the guard to move the opening instead, and if a cut cannot be reached with the guard fitted, that indicates the wrong tool for the job rather than a reason to remove it.
Do these come with a battery?
Several are bare tools, meaning no battery and no charger, and the listing title is usually where that is stated. That is good value if you already own packs on the same platform and poor value otherwise. Note also that a brand’s twelve volt and twenty volt tools generally use different packs. More workshop picks are in our category directory.
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