DEWALT D25651K 1-3/4-Inch Spline Combination Hammer Kit with CTC 13.5 Amp motor provides maximum performance and overload protection 9.5-Foot-pounds, impact Energy provides fast drilling and powerful chipping Complete Torque Control (CTC)-patented 2 Stage clutch provides maximum control in bind up situations SHOCKS-Active Vibration Control reduces vibration up to 50-percent while increasing user comfort and productivity Electronic variable speed allows the user to control the speed of drilling and chipping while maintaining speed under load