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The DeWalt DCF900B is a 20V MAX cordless 1/2-inch impact wrench rated at 1,400 ft-lb of fastening torque and 2,400 impacts per minute. It uses a brushless motor, a variable-speed trigger and a hog ring anvil for fast socket changes. At 9.1 inches long it is compact for its torque class, and it is sold as a bare tool, so batteries and charger are separate. It suits mechanics and heavy-equipment work where a corded or air tool would otherwise be needed; within DeWalt's 20V line it sits above the mid-torque models and trades some size for far more breakaway power.
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Lowest price we've seen: $237.94 on Nov 13 at Amazon. Tracked across 1 store since Nov 13.
Owners rate the DCF900B highly for its breakaway power, calling it a match for many corded and air impact wrenches. Mechanics praise the compact body and hog ring, while some note the weight and the need for big batteries.
The DeWalt DCF900B XR is a cordless, brushless impact wrench with a 1/2 inch drive and a hog ring (friction ring) socket retention. It runs on a 20 volt lithium-ion battery and is sold as a tool only, so the battery is sold separately.
It delivers 1400 ft/lb of torque at up to 2400 impacts per minute. A variable speed trigger and 4 speed modes give control across a range of applications. Precision wrench control is designed to help prevent overtightening and fastener run-off.
An on-tool LED work light illuminates dark workspaces. A forward and reverse switch sets the direction. Battery guard is a shock-absorbing battery-to-tool connection that reduces wear and tear on the battery.
