Manufacturer | DEWALT |
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Place of Business | B09TB7M842 |
Part Number | DCS438B |
Product Dimensions | 12.38 x 15.39 x 12.38 cm; 1.36 kg |
Item model number | DCS438B |
Size | One Size |
Colour | Multi |
Style | Angled |
Material | Blend |
Power Source | Battery Powered |
Voltage | 20 Volts |
Wattage | 550 watts |
Horsepower | 550 Watts |
Item Package Quantity | 1 |
Special Features | Compact |
Included Components | 3IN COMPACT CUT OFF TOOL BARE |
Batteries Included? | No |
Batteries Required? | Yes |
Item Weight | 1.36 kg |
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DEWALT (DCS438B) 20V MAX* XR BRUSHLESS 3IN Compact Cut Off Tool (Bare)
Purchase options and add-ons
Brand | DEWALT |
Material | Blend |
Style | Angled |
Power source | Battery Powered |
Colour | Multi |
Item weight | 3 Pounds |
Voltage | 20 Volts |
Wattage | 550 watts |
Maximum rotational speed | 2E+4 RPM |
Horsepower | 550 Watts |
About this item
- POWER THROUGH DIFFICULT APPLICATIONS with brushless motor and 550 MWO**
- CUT A WIDE RANGE OF MATERIALS: Includes Bonded Abrasive Wheel, Diamond†Multi-Material Wheel, and Diamond†Tile Wheel (This blade uses manufactured diamonds engineered for cutting)
- ILLUMINATE DARK WORK AREAS with bright LED
- CONVENIENTLY SET DESIRED DEPTH: Dust shroud features tool-free depth adjustment with mm and inch markings
- CONNECT TO EXTRACTORS: Includes a removable dust shroud with an AirLockâ„ connection, enabling the unit to be connected to a DEWALT extractor (sold separately)
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Product information
Technical Details
Additional Information
ASIN | B09TB7M842 |
---|---|
Customer Reviews |
4.6 out of 5 stars |
鶹 Rank |
|
Date First Available | April 6 2022 |
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Product description
Cut a wide range of materials with the 20V MAX* XR Brushless 3 in. Cut-Off Tool. With a no-load speed of 20,000 rpm, this durable tool is designed to cut through a variety of materials like metal, tile, stone, plastic, and drywall/fiber cement. You won’t waste time hunting for a hex wrench thanks to the onboard storage and spindle lock which enable quick wheel changes. With both forward and reverse capability, you can conveniently change the direction of the cut depending on the application. The included dust shroud with adjustable shoe and AirLock™ connection allows for convenient attachment to DEWALT extractors, while the integrated LED lets you work in dark spaces. This versatile tool is Lanyard Read Capable to protect against drops, and is Chip-Ready to allow tracking via the TOOL CONNECT™ System (chip and lanyard sold separately).
From the manufacturer

Top Brand: DEWALT
Compare with similar items
This Item DEWALT(DCS438B) 20V MAX* XR BRUSHLESS 3IN Compact Cut Off Tool (Bare) | Recommendations | |||
Try again! Added to Cart spCSRF_Treatment Add to Cart | Try again! Added to Cart spCSRF_Treatment Add to Cart | Try again! Added to Cart spCSRF_Treatment Add to Cart | ||
Price | — | -14%$128.00$128.00 Was: $149.00 | $149.00$149.00 | $379.00$379.00 |
Delivery | Get it by Tuesday, Jul 29 | Get it by Tuesday, Jul 29 | Get it by Tuesday, Jul 29 | Get it Jul 30 - Aug 5 |
Customer ratings | ||||
Sold by | A1Premium | 鶹.ca | 鶹.ca | Equipement Polar |
power source | Battery Powered | cordless-electric | Battery Powered | Battery Powered |
max. rotational speed | 20000 rpm | 8000 rpm | 30000 rpm | 8000 rpm |
wattage | 550 watts | 2000 watts | — | — |
voltage | 20 volts | 20 volts | 18 volts | 20 volts |
style | Angled | 20V Tool Only (DCG412B) | Tool | Classic |
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Customer reviews
Customers say
Customers like the functionality, cutting performance, and quality of the disc grinder tool. They mention it's a great machine, useful for small cuts, and cuts the metal like better. Customers also appreciate the size, saying it fits in small places and is versatile for multiple tasks. They also say it's easy to use and has a nice appearance.
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Customers are satisfied with the functionality of the disc grinder tool. They mention it's an excellent addition to their tool kit and works fine.
"very good tool, i am using this to cut 1/2" EMT and wiremold for my job, for this purpose this is a very good tool, i wish the cut depth was a..." Read more
"Works fine. Light and useful for small cuts" Read more
"Great tool..." Read more
"Good tool..." Read more
Customers like the cutting performance of the disc grinder tool. They mention it's useful for small cuts, cuts the metal like better, and is the best cutting machine they've ever used. Customers also say it cuts through most anything.
"...the tool box and with the variety of wheels you can get it cuts through most anything. Took me a while to finally buy it but I am very happy I did...." Read more
"Love the light weight and ease of use. Cuts small circles and curved shapes with ease. Would have given 5 stars if it had variable speed." Read more
"Amazing too that cuts like it's big." Read more
"Nice clean cuts made easy in metal plate and tubing. An excellent addition to my tool kit" Read more
Customers are satisfied with the quality of the product. They mention it's heavy-duty, reliable, and a good brand.
"Good quality" Read more
"Dewalt always good quality, more versatile that circular saw, lightweight" Read more
"DeWalt Is a quality product" Read more
"As expected from a DeWalt machine, it is very reliable and didn’t disappoint" Read more
Customers like the size of the disc grinder tool. They mention it's compact, fits in small places, and works very efficiently with little effort. They also say it's portable, lightweight, and great for tight areas.
"Compact and powerful. I use Dewalt tools and this tool is very useful. From cutting tile, tin, wood and chicken wire. Makes jobs so much easier...." Read more
"Dewalt always good quality, more versatile that circular saw, lightweight" Read more
"Love the light weight and ease of use. Cuts small circles and curved shapes with ease. Would have given 5 stars if it had variable speed." Read more
"This is fine for small domestic projects but is small for larger uses." Read more
Customers appreciate the versatility of the disc grinder tool. They mention it's a great tool to have, can be used for multiple tasks, and is more versatile than a circular saw.
"Dewalt always good quality, more versatile that circular saw, lightweight" Read more
"...Terrific tool. I would recommend this" Read more
"Very handy for many jobs. Use the correct cutting disc for the job and take away the headache/ frustration some jobs can create...." Read more
"I've used this tool many times for various jobs and it's a great tool to have." Read more
Customers like the ease of use of the disc grinder tool. They mention it's lightweight, very practical, and makes jobs so much easier. Customers also say it comes in handy.
"...From cutting tile, tin, wood and chicken wire. Makes jobs so much easier...." Read more
"Love the light weight and ease of use. Cuts small circles and curved shapes with ease. Would have given 5 stars if it had variable speed." Read more
"Nice and small easy to use and good for what I need." Read more
"Because this cut-off tool is portable it comes in handy and easy to use...." Read more
Customers like the appearance of the disc grinder tool. They mention it's nice, cute, and unique. Some say it's a great accessory for their toolbox.
"Nice and small easy to use and good for what I need." Read more
"I haven’t used it yet but Looks good and feels comfortable" Read more
"...Cute nice, easy to handle and make accurate cuts." Read more
"Its a pretty unique tool, cuts good." Read more
Reviews with images

Performance
Top reviews from Canada
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- Reviewed in Canada on November 9, 2024Verified PurchaseCompact and powerful. I use Dewalt tools and this tool is very useful. From cutting tile, tin, wood and chicken wire. Makes jobs so much easier. Does not take up much room in the tool box and with the variety of wheels you can get it cuts through most anything. Took me a while to finally buy it but I am very happy I did. Lots of YouTube videos showing you different ways to use this versatile tool.
- Reviewed in Canada on May 25, 2025Verified PurchaseI purchased this tool to cut out the receptacles and various notches for a backsplash project. I ended up doing all the cuts with this tool. I didn't bother buying the sliding table tiling saw I was planning. I used the included tile saw, and it finished the job. It probably has lots of life left. You need a steady hand, but it is a fantastic tool. I tried cutting up cardboard with the multi-blade, which is easier than using a knife. I am sure there will be lots of jobs I have not thought of to put it to work.
- Reviewed in Canada on June 5, 2025Verified PurchaseI absolutely love my new saw
- Reviewed in Canada on May 21, 2024Verified PurchaseLove the light weight and ease of use. Cuts small circles and curved shapes with ease. Would have given 5 stars if it had variable speed.
- Reviewed in Canada on May 24, 2025Verified PurchaseAmazing too that cuts like it's big.
- Reviewed in Canada on July 14, 2025Verified PurchaseLove it
- Reviewed in Canada on December 10, 2024Verified PurchaseNice clean cuts made easy in metal plate and tubing. An excellent addition to my tool kit
- Reviewed in Canada on December 12, 2024Verified PurchaseDewalt always good quality, more versatile that circular saw, lightweight
Top reviews from other countries
- Greg WiedemanReviewed in the United States on July 8, 2025
5.0 out of 5 stars YOU NEED THIS!!
Verified PurchaseWow, this small cutoff tool is incredibly impressive! I used it to cut my entire patio, and the results went beyond my expectations. The powerful performance it provides makes it ideal for cutting stone and masonry easily. Its lightweight design and simple handling have quickly made it my favorite tool for working with stone. If you're searching for a dependable, efficient tool that gets the job done effortlessly, this is the one you need! The cordless feature is also a bonus. The tools cut accurately, and the speed is fantastic. The battery lasted through cutting 10 stones before needing a second, but they charge so fast—just keep a couple handy.
Greg WiedemanYOU NEED THIS!!
Reviewed in the United States on July 8, 2025
Images in this review
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Henrry silvaReviewed in Mexico on April 9, 2025
5.0 out of 5 stars Herramienta de corte DeWalt XR
Verified PurchaseSin duda DeWalt es una de las mejores marcas de herramientas y este lanzamiento no es la excepción, una excelente compra, excelente servicio, excelente herramienta.100% recomendable , puedes ver la reseña en mi canal de Youtube guerra de herramientas.
Henrry silvaHerramienta de corte DeWalt XR
Reviewed in Mexico on April 9, 2025
Images in this review
- RichardReviewed in the United Kingdom on February 6, 2025
5.0 out of 5 stars Powerful, compact safe one handed mini angle grinder cut off tool….Brilliant
Verified PurchaseFar more grunt than most others. It chews through steel and paver slabs with barely an audible change in note.
It also has best cutting depth..upto 22mm or 7/8”.
Safety First: Now it is technically an angle grinder, but don’t risk side loading cut off discs to ‘grind’ with it huh! The all metal diamond edged blades (and this tool comes with one) can be gently used side on to smooth down a cut surface because they won’t shatter on you!
What you get is three different blades…a black fibre type 1mm thin cut off disc for metals (see above), a yellow diamond blade for multi materials and a smooth rim diamond disc for tiling work. Note when blade changing the arbor is a Left Hand thread (tightens counter clockwise).
In operation…though you should wear ear protection, it doesn’t seem unbearably loud. Best of all it is designed for one handed use and makes cutting almost any material feel practically as easy as using scissors.
It features a rotation reverse switch so you can make it shoot the spark stream forward instead of along your arm - Nice!
The arbor is a less common 3/8” or 9.5mm….but a spacing ring is included for 10mm arbour discs.
I recommend in particular the Ezarc 76mm x 9.5mm arbor diamond disc as it fits perfectly.
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A word to the wise…this WILL cut 1/2 rebar and similar if you don’t have a regular angle grinder…but that is not its forté and like all its peers it is best used on thinner stock, sheet and tube. With the yellow blade it will cut thin plywood, but it is not a circular saw and chewing into 15mm ply will bog it down and burn the wood…probably not healthy for the tool either.
Slabs…yep…in seconds it cut a half inch deep groove into a paving slab..flipped it and cut the back then a hard tap and it was in two …. Barely a minute, so easy!
Price…phew..it is steep at £180 without battery….but, if you break the piggy bank you won’t regret it. This is a strong, high quality, performance tool which delivers.
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ALWALEED ALKHALIDYReviewed in Saudi Arabia on October 4, 2024
5.0 out of 5 stars جميل جدا
Verified Purchaseخفيف وقوي وجودة