Bare Tool Milwaukee 0881-20 18-Volt V18 1/4-Inch Hex Impact Driver Kit (Tool Only, No Battery) Features the highest torque in its class at 1400 inches-per-pound Speed of 2,600 RPM with 3,200 impacts per minute Includes a built in LED light Chuck is 1/4-inch hex Best paired with Milwaukee's 18-volt Li-ion batteries