DEWALT DC940KA 12-Volt XRP Drill/Driver DEWALT-built high torque, high efficiency motor delivers maximum 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 ratcheting chuck helps prevent bits from slipping and falling out Superior ergonomics optimize balance, size, and weight