POWERFUL 8.5-AMP MOTOR: Drives 3.1 ft.-lbs. of impact energy for professional results VIBRATION CONTROL IN THE HAMMER MECHANISM AND THE GRIP AREA: Maximum user comfort for extended periods of work SDS-PLUS SHANK SYSTEM: For use with bits up to 1-1/4 in. diameter OPTIONAL THREE-JAW CHUCK SHANK: Allows a quick change-out for using a wide variety of bits MULTIFUNCTION SELECTOR: Rotary hammer, rotation-only and hammer-only mode VARIABLE-SPEED TRIGGER WITH REVERSING: For accurate bit starting as well as removing fasteners or bound bits INTEGRAL CLUTCH: Disengages torque transmission if the bit gets into a bind situation BOSCH IMPACT SYSTEM: Maximizes impact force and minimizes vibration 360 ROTATION AUXILIARY HANDLE: For convenient operator control LIGHT WEIGHT: Hammer weighs only 10.3 lbs.