DEWALT D25712K 1-7/8-Inch SDS Max Combination Hammer with CTC SHOCKS-Active Vibration Control reduces vibration up to 50-percent while increasing user comfort and productivity Complete Torque Control (CTC)-patented 2 Stage clutch provides maximum control in bind up situations 13 Amp motor provides maximum performance and overload protection; 210-415 rpm; 1430-2840 bpm 11.7-Foot-lbs. of impact energy provides fast drilling and powerful chipping Rear handle mount means less bending over when using tool in downward chipping applications