Featuring a 7/16 in. hex quick-change retention system for fast, secure insertion/removal of auger bits and socket adapters, this Milwaukee 9092-20 is especially useful when drilling and bolting applications require frequent accessory changes. This is the only variable speed impact wrench of its kind available. It has a Milwaukee 9092-20 built motor coupled with a large ram and anvil which produce up to 315 ft. lbs of torque. The Milwaukee 9092-20 impact wrench can achieve tasks only larger impact wrenches could do in the past. Fastening applications, driving large lag bolts deep into wood, and drilling large holes in utility poles can easily be accomplished with the 9092 impact wrench. - Variable speed switch for maximum user control, 600-1, 800 RPM - quick-change 7/16 in. hex retention system - bracket and steel ring for easy transport.