Steelman Reversible Air Drill with a 3/8" chuck and spindle thread of 3/8"-24 offers a free speed of 1,800 RPM. This heavy-duty, air-powered tool is constructed of lightweight aluminum and features quality-hardened gears, with a convenient forward/reverse lever included. This product also features a 1/4" air inlet (for 3/8" hose) and runs on 90 PSI of air pressure, with an air consumption of 4 CFM, measuring 7" in overall length.