The DeWalt DC935KA is a 14.4V Heavy-Duty XRP 1/2 inch Cordless Hammerdrill/Drill/Driver Kit. It has high power, high efficiency motor to deliver 335 unit watts out of power for maximum performance in all drilling and fastening applications. The XRP drill comes equipped with a patented 3-speed transmission. The 3-speed transmission allows the drill to be set to match the speed to the application for optimal performance. The drill/driver features an exclusive 1/2 inch axial locking chuck where the sleeve locks to prevent bits from slipping and falling out. The drill is powered by an XRP extended run-time battery that gives the drill long run-time and battery life. It offers superior ergonomics providing optimal balance, size and weight. XRP drill is built to allow for standard nut drivers and a variety of screwdriver bit tips to be stored on the tool.