Campell Hausfeld Air Screwdriver (CL157500AV) The double rocking dog type screwdriver has a max torque of 300 ft. -lbs. w/ a free speed of 10,500 RPM, making installing and removing fasteners quick and easy Features compact, durable design w/ a built in hanger hook for easy storage. Quick change chuck for 1/4-in. hex bits & built-in power regulator makes the CL157500AV both efficient and easy to operate Working torque of 75-120 ft.lbs and 2. 8 SCFM average air consumption. 1/4-in. air inlet and minimum hose size of 3/8-in. Finish your projects with Campbell Hausfeld - The Air Power Expert