For use on heavy automobile and light truck applications. Working torque: 50-450 ft./lbs.; maximum torque: 625 ft./lbs.; blows per minute: 1320; free speed: 6400 RPM; average air consumption: 5.5 cfm; air inlet thread: 1/4" NPTF; minimum hose size: 3/8" sound dBA: 96; length: 7"; weight: 5.25 lbs.