Dewalt DCF921B Atomic 20V Max* 1/2 In Cordless Impact Wrench With Hog Ring Anvil (Tool Only)Dewalt DCF921B Features STRONG PERFORMANCE: Up to 300 ft lbs of max fastening torque and 450 ft lbs of max breakaway torque ENHANCED USER CONTROL in a variety of applications with 4 speed settings HELPS PREVENT OVERTIGHTENING and fastener run off with Precision Wrench control BRIGHTEN DARK WORKSPACES with onboard LED and brightness control QUICKLY CHANGE SOCKETS: Hog ring anvil for rapid, secure socket changes OPTIMIZED SPEED IN WOOD with Timber Screw