The M12 FUEL Subcompact Impact Wrench from Milwaukee Tool is compact and the lightest weight in its class. Coming in 1/4" and 3/8" sizes, this impact wrench offers up to 100 ft.-lbs. and 225 ft.-lbs. of nut-busting torque, respectively. It offers a 4-Mode DRIVE CONTROL system for precision and adaptability, an AUTO SHUT-OFF mode to limit torque for hand-tight applications, and a bolt-removal mode with slower rpm. Each wrench weighs 1.6 lbs. or less and features a protective boot to withstand corrosive materials.