The DEWALT D25761K 2 In. SDS max combination hammer kit features shocks - active vibration control which reduces vibration felt by the user at the handles; this is a DEWALT perform and protect feature. 15.5 Joules of impact energy provides maximum performance in drilling and chipping, and the 15 Amp motor provides maximum overload protection and power. This unit offers electronic variable speed which allows the user to control the speed of drilling or chipping while maintaining speed under load. It has a rear handle mount that means less bending over when using tool in down drilling applications. Trigger lock on reduces user fatigue while chipping. An electronic soft start provides the user more control when the trigger is pulled. This hammer is designed with an integral clutch, for optimal concrete drilling at 1 to 1-3/4 In., and offers a no load speed of 125 to 250 rpm, and blows per minute at 1,150-2,304 bpm. Includes a kit box.