The Milwaukee Tool M12 FUEL 3/8" Ratchet Tool, No. 2557-20, delivers up to 55 ft-lbs of maximum torque and 200 rpm, making it an ideal fastening solution for automotive mechanics, repair technicians, and maintenance workers who demand maximum performance and convenient portability. The M12 battery powered ratchet has a low profile head and cordless design which allows users more access in tight spaces. With the company's FUEL technology, a reinforced mechanism and investment cast steel yoke housing, the rechargeable ratchet is able to withstand daily jobsite wear and tear.