SP Air Corporation ratchets, with a patented sealed flat ratchet mechanism, provide a maximum speed of 250 rpm and a maximum torque of 25 ft./lbs. Each light-weight ratchet features a reverse lever that can be operated with one hand, an air regulator and a 360-degree exhaust sleeve. Product Specifications: 8-inches long, 1.5 lb., 3/8-inch sq. drive, 3/8-inch bolt capacity.