Bosch RH328VC-RT SDS-Plus Rotary Hammer, 1-1/8" - (Certified Refurbished) 8 amp motor delivers 0 - 900 RPM and 0 - 4,000 BPM Best performing rotary hammer in its class with an unmatched power to weight ratio with 2.6 ft-lbs. of impact energy at only 7.7 lbs Active Vibration Control in the hammer mechanism and the grip area provides maximum user comfort for extended periods of work Multi-function selector offers 3 modes of operation: rotary hammer, hammer-only mode, and rotation only mode Integral clutch helps minimize torque reaction Powerful 8 Amp SDS Rotary Hammer