The DeWALT DCF911B 20V MAX 1/2-in. Impact Wrench with Hog Ring Anvil is a compact cordless fastening tool built for mechanics, service techs, contractors, and serious DIY users who need solid torque without dragging around a full-size high-torque wrench. This is a cordless impact wrench designed for quick loosening and tightening of bolts, lug nuts, and other fasteners. Model Number: DCF911B. If your work regularly puts you in tight spots but still calls for real fastening muscle, this is the kind of tool that makes sense.

On the numbers that actually matter, this 20V MAX impact wrench delivers up to 250 ft-lbs of max fastening torque and 400 ft-lbs of max breakaway torque. That gives it enough range for lug nuts, equipment hardware, and general bolt work while keeping the package lighter and easier to manage than a larger shop-focused impact. It is a good fit when you want one tool that covers a broad chunk of everyday fastening instead of carrying a bulky wrench for every job.

The compact body is a big part of the appeal here. At 5.2 inches long and about 2.2 lbs tool weight, the DCF911B is built for confined, difficult-to-access workspaces. That matters around suspension components, engine bays, steel assemblies, and mechanical installs where clearance is limited and a longer tool turns a simple job into a knuckle-busting one. It is easier to hold overhead, easier to maneuver one-handed, and less tiring when you are moving from fastener to fastener all day.

DeWALT pairs that compact layout with a brushless motor, which is the right setup for a cordless impact wrench like this. A brushless motor helps the tool run efficiently and keeps the powertrain more practical for repeated fastening work. The 1/2-inch square drive and hog ring anvil are also a smart combination for the target user. If you swap sockets often, hog ring retention is usually the better choice because it is quick, secure, and less fussy than a pin-style setup.

Jobsite practicality is built in too. The integrated LED ring helps when you are working in low light under vehicles, inside utility spaces, or in dim corners of a mechanical room. The housing is listed as glass-filled nylon, which adds durability and, according to the product imagery and supporting data, offers resistance to harsh automotive chemicals and solvents. That is worth paying attention to if this tool will spend time in a service truck, garage, or maintenance environment instead of staying clean on a shelf.

The DCF911B is part of the DEWALT 20V MAX battery platform, so it makes the most sense for users already running that system. That means battery and charger flexibility across other 20V MAX tools, but it also means this version is a tool-only purchase. In the box you get the impact wrench and a belt clip. Battery and charger are sold separately, which is great if you are already invested in the platform and not so great if this is your first DeWALT cordless tool.

Who should buy it? This is a strong choice for automotive work, general service and repair, equipment maintenance, steel and mechanical fastening, and contractor punch-list jobs where portability matters as much as output. If you mainly break loose extremely seized suspension hardware every day, you may still want a larger high-torque model in the truck. But if you want a compact 1/2-inch cordless impact wrench that covers a wide range of real-world fastening tasks without feeling oversized, this one lands in a very useful middle ground.

Small Footprint, Useful Torque

The DeWALT DCF911B 20V MAX 1/2-in. Impact Wrench with Hog Ring Anvil hits a sweet spot for users who want real fastening performance in a compact cordless package.

• Who it's for: Mechanics, maintenance techs, contractors, and homeowners who need a 1/2-inch impact wrench for lug nuts, bolts, and general service work in tighter spaces.
• Why it stands out: You get 400 ft-lbs of breakaway torque, a compact 5.2 inch body, brushless motor, and a hog ring anvil that keeps socket swaps quick.
• Worth knowing: This is the bare tool, so battery and charger are not included. If you already own DEWALT 20V MAX packs, that is a plus. If not, factor that into the real buy-in cost.

• Is this a drill or an impact driver? No. This is a cordless 1/2 in impact wrench designed for bolts, lug nuts, and other heavier fasteners that use impact sockets.
• What battery system does it use? It runs on the DEWALT 20V MAX battery platform.
• Does it have a brushless motor? Yes. The DCF911B uses a brushless motor.
• Can it help with lug nuts? Yes. DeWALT rates it at up to 250 ft-lbs max fastening torque and 400 ft-lbs max breakaway torque, which suits lug nuts and similar automotive fastening tasks.