With a high-performance motor, overload protection and reduced vibration, this DEWALT 2" SDS Max Combination Hammer (D25763K) can get the job done. It boasts 15.5 joules of impact energy for maximum performance in drilling and chipping tasks. The electronic variable speed gives you control of the speed of drilling or chipping while maintaining speed under load. Plus, the trigger lock-on reduces user fatigue while chipping