DEWALT DC925 18-Volt Cordless Hammerdrill/Drill/Driver Only Tool included. Battery sold separately. DEWALT built high power motor delivers 510 unit watts out of power Hammerdrill Mode: 34,000 BPM Drills Faster Holes In Masonry Applications New Style Heavy-Duty 1/2" self-tightening chuck providing superior bit gripping torque Patented 3-speed all-metal transmission matches the speed to the application for optimal performance