The DeWalt DCF891B is a 1/2-inch mid-range impact wrench rated at up to 600 ft-lbs fastening torque and 800 ft-lbs breakaway torque. It runs on DeWalt's 20V MAX battery platform and adds four speed settings plus Precision Wrench control, which slows the tool as a bolt seats to limit overtightening and run-off. It is a compact, lightweight option for lug nuts, suspension work and heavy fastening where a full-size high-torque gun is overkill. Against premium 1/2-inch cordless wrenches it gives up some peak torque, but it shares batteries with the rest of the 20V MAX line and is easier to fit into tight wheel wells and engine bays.
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Rated 5 out of 5 from 18 ratings, owners describe the DCF891B as a strong, controllable mid-range wrench that handles lug nuts and general fastening without the bulk of a high-torque gun. The Precision Wrench modes and LED light come up as practical touches.
This is a DeWalt 1/2 in. mid-range impact wrench kit. The wrench delivers up to 600 ft-lbs of fastening torque and up to 800 ft-lbs of breakaway torque. It has 4 speed settings, and Precision Wrench control helps prevent overtightening and run-off.
The wrench has a compact, lightweight design and an on-tool LED for tight or dark work areas. The kit includes 20V MAX XR 5.0Ah batteries with a 3-LED fuel gauge. The batteries work with the full line of DeWalt 20V MAX tools.












