Drive screws and other fasteners with this high-output 20V MAX Brushless Cordless 1/4 in. Impact Driver. The Impact Driver was engineered to be lightweight for ease of use without sacrificing performance. Its brushless motor delivers up to 1,700 in-lbs of torque and up to 3,200 rpm for driving large-diameter screws. The compact design provides maneuverability and access to confined areas when doing cabinetry and framing work. Maintain productivity in low-light spots with a 3-LED, on-board work light that illuminates dim workspaces. This Cordless kit comes with our lightest and most powerful 20V MAX battery, with 50% more power than the DCB203, and a 25% smaller footprint. The DEWALT POWERSTACK compact battery works with all DEWALT 20V MAX power tools and chargers

DCF840: HIGH-PERFORMANCE BRUSHLESS MOTOR: Drive large-diameter screws with 1,700 in-lbs of torque and 3,200-rpm
DCF840: MANEUVER WITH EASE: Compact design for mobility and access to difficult-to-reach spots
DCF840: PRO-LEVEL CONTROL and precision with variable speed trigger
DCF840: BRIGHTEN DARK WORK AREAS: Integrated 3-LED work light designed to enhance visibility in dimly lit spaces

(1) Dewalt DCF840E1 20V Brushless Impact Driver Kit