Drill HP - Air Tools 0.50 Chuck Size - Air Drills 1/2 in Drill Chuck Type - Air Drills Keyless Reversing Yes Pistol Body Style - Air Tools Free Speed 500 RPM Industrial Duty Duty Cycle - Air Tools Air Inlet Size - Air Tools 1/4 in NPT Average CFM @ 15 Second Run Time 4.00 CFM @ Full Load 16.0 Required Pressure 90 psi Min Hose Size 3/8 in Handle Material Aluminum Variable Speed Yes Throttle Type Trigger Bearings Ball Housing Material Aluminum Overall Length 8 3/4 in