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The DeWalt DCF900B is a 20V MAX XR 1/2-inch high-torque impact wrench that delivers 1,030 ft-lbs of fastening torque and 1,400 ft-lbs of breakaway torque. It features a 4-mode selector with Precision Wrench control to prevent overtightening and fastener run-off, plus BATTERYGUARD shock absorption and an LED work light. Professional mechanics and serious DIYers will appreciate its power for heavy-duty tasks like wheel lugs and concrete anchors. Compared to rivals, it offers comparable torque to flagship models but with DeWalt's 20V MAX battery compatibility; reviewers praise its power but note its weight and bulk.
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Lowest price we've seen: $83.40 on Nov 13 at eBay. Tracked across 16 stores since Nov 13.
Reviewers generally praise the DCF900B for its exceptional power and control features, though some find it heavy and note the lack of included battery. With a 4.4 rating from 157 reviews, it is well-regarded for professional use.
The DEWALT 20V MAX XR DCF900B is a cordless 1/2 in high torque impact wrench with a hog ring anvil. It is sold as a tool only. It is made for mechanics, construction crews and DIY users doing heavy fastening and removal work, such as large pipe flanges, grooved couplings, wheel lugs, concrete anchor bolts and structural fasteners.
It delivers 1,030 ft-lbs of max fastening torque and 1,400 ft-lbs of max breakaway torque. A Precision Wrench control mode helps prevent overtightening in forward and fastener run-off in reverse. A 4-mode push-button selector adjusts speed and torque output, and it also controls LED brightness.
BATTERYGUARD technology is a shock-absorbing battery-to-tool connection that helps reduce wear during heavy use. An on-tool LED work light improves visibility when working under vehicles, in mechanical rooms or in low light. The wrench is part of the DEWALT 20V MAX XR system.









