Makita HM1111C AVT Demolition Hammer Powerful 14 AMP motor delivers 12.7 ft.lbs. of impact energy to handle the most demanding applications Anti-Vibration Technology is an internal counterbalance system that greatly reduces vibration for increased user comfort and greater productivity Detached rear handle is spring loaded and engineered to provide less vibration and more control Constant speed control automatically applies additional power to the motor to maintain speed under load to complete the most challenging jobs Soft start suppresses start-up reaction for more control and better accuracy