Campbell Hausfeld Air Ratchet 3/8" (CL150100AV) This 3/8-inch air ratchet has a working torque from 10  45 ft.-lbs. and can deliver a maximum 55 ft.-lbs. of torque to remove and install fasteners in tight spaces, making this air ratchet ideal for automotive engine work Rubber grip for added comfort and durable heat-treated ratcheting components for increased longevity. Finish your projects faster and easier with Campbell Hausfeld - The Air Power Expert Drive: 3/8 in., Free Speed RPM: 155, Air Consumption Avg.: 4.8 SCFM