8 Amp motor delivers 0-900 RPM and 0-4,000 BPM. Unmatched power to weight ratio - 8.0 Amps, 2.6 ft-lbs. impact energy and 7.7 lbs - Best performing rotary hammer in its class. Active Vibration Control in the hammer mechanism and the grip area provides maximum user comfort for extended periods of work. Multi-function selector 3 modes of op...