Your job calls for the heavy duty power of a quality rotary hammer, but you don't want to deal with the vibration and fatigue associated with traditional rotary hammer tools. Check out the Bosch RH328VC 1-1/8" SDS-plus Rotary Hammer; it offers all the power and precision of competing rotary hammers and features anti-vibration technology and an ergonomic grip design that keeps you comfortable and productive all day long. This rotary hammer is designed to handle the toughest drilling applications in the toughest of materials. Concrete, stone, masonry and brick are no match for the 8.5 amp motor producing 900 rpm and 4000 bpm. The variable speed, 3 finger trigger allows for more precise bit starting in hard materials and helps eliminate bit run out, and the 360 deg. side handle keeps the tool under control even in high torque situations.