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The DeWalt DCF900B is a 20V MAX XR 1/2-inch cordless impact wrench built for heavy fastening: up to 1,396 Nm of fastening torque and 1,898 Nm of breakaway torque. A brushless motor, a four-speed selector and the Precision Wrench control that limits over-tightening and runaway removal set it apart from older single-speed wrenches. It suits mechanics, pipefitters and concrete crews turning large flange bolts, lug nuts and anchors. Owners rate it highly for power and control; the main complaints are its weight and bulk in tight spots.
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Lowest price we've seen: $83.40 on Nov 13 at eBay. Tracked across 15 stores since Nov 13.
Rated 4.4 out of 5 from 157 ratings. Owners praise the power and the speed control, and most criticism centers on weight and size rather than performance.
The DEWALT DCF900B is a 20V MAX XR cordless impact wrench with a 1/2" drive. It has a brushless motor. It delivers a maximum fastening torque of 1396 Nm (1030 ft-lbs) and a breakaway torque of up to 1898 Nm (1400 ft-lbs).
A 4-speed selector controls the power. The Precision Wrench feature is designed to help prevent overtightening and uncontrolled loosening of fasteners. An integrated LED work light with adjustable brightness lights the work area in dark conditions.
It is used for large pipe flanges, wheel bolts and concrete anchors, among other fastening jobs.









