DEWALT DC821KA 18-Volt 1/2-Inch Compact Impact Wrench Heavy-duty DEWALT-built motor provides long life under continuous heavy use conditions 0-2,100 rpm/0-3,000 ipm for fast application speed Durable all-metal gear case and transmission provide jobsite-ready durability 160 ft-lbs of max torque provides power to perform a wide range of fastening applications variable speed trigger and electric brake provide control for tightening and loosening fasteners; Textured ant-slip comfort grip provides maximum comfort and control