The DCH273B 20V Max XR Brushless 1” Rotary Hammer is a high-performance drill that is powered by a DEWALT brushless motor and a durable German engineered mechanism that delivers 2.1 joules of impact energy. Coupled with its light weight design and SHOCKS® Active Vibration Control® technology, this hammer is ideal when used in overhead applications. The DCH273B is Dust Extraction ready for the D25303DH.