The DCH273 20V MAX XR Brushless 1-in 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. Brushless motor for extended runtime and durability SHOCKS- active vibration control significantly reduces vibration and increases user comfort and productivity, a Perform and Protect feature 2.1 Joules impact energy provides corded power without the cord Outstanding power-to-weight ratio results in superior productivity Optimized ergonomic design provides exceptional overhead drilling experience Factory-set clutch reduces sudden, high torque reactions if bit jams This item has been used only once but is in good condition