This 1-3/4 in. spline combination hammer delivers 8 joules of impact energy for drilling or chipping. Constant speed electronics maintain speed under load in even the hardest concrete. Get enhanced control in a bind up from our patented E-Clutch® system. It minimizes sudden torque reaction compared to standard clutches. This lightweight hammer is ideal for horizontal serial drilling for no. 5 to 8 rebar. It's also perfect for coring and chipping in any mid to upper wall applications. Shocks Active Vibration Control® technology reduces vibration to minimize user fatigue for increased productivity.