DEWALT DC925VA 18-Volt XRP Hammerdrill/Drill/Driver with Vehicle Charger DEWALT built high power, high efficiency motor delivers 480 unit watts out of max power for superior performance in all drilling and fastening applications XRP extended run-time batteries provide long run-time and battery life Patented 3-speed all-metal transmission matches the speed to the application for optimal performance Heavy-Duty 1/2-inch self-tightening chuck tightens throughout operation providing superior bit gripping torque Superior ergonomics optimize balance, size, and weight