The cordless hammer drill has the brushless motor for efficient performance and runtime DEWALT 20V hammer drill has 2.1 Joules impact energy for fast drilling in concrete Lightweight design makes this DEWALT 20V brushless hammer drill ideal for structural connections, beam & column anchorage, rod hanging, seismic & safety attachments, cable tray & strut mounting, and steel stanchion mounting. SHOCKS ACTIVE VIBRATION CONTROL System reduces vibration felt by the user at the handles, compared to rotary hammers without this feature Powerful dust extraction system with built-in motor for increased suction and high tool performance 2-second power-off delay ensures dust extraction continues after drill is switched off Replaceable dust nozzle Durable, clear high capacity dust box Quick release for easy tool assembly and disassembly Replaceable HEPA filter removes 99.97% of airborne particle 0.3 microns or greater.