DEWALT D25012K 7/8-Inch Compact SDS Rotary Hammer Kit 6 amp motor provides high performance and overload protection: (0-1,550 RPM, 0-4,150 BPM) Variable speed trigger allows user to instantly control speed from to dialed setting Lightweight design for easy use and handling in a variety of orientations Allows for usage in both rotary hammer and rotary only applications Reversing feature helps release tool from bind up situations, and assists with removal of fasteners Integral clutch reduces sudden, high torque reactions if bit jams