Drill HP - Air Tools 0.50 Chuck Size - Air Drills 3/8 in Drill Chuck Type - Air Drills Keyed Reversing Yes Inline Body Style - Air Tools Free Speed 1 400 RPM Industrial Duty Duty Cycle - Air Tools Air Inlet Size - Air Tools 1/4 in NPT Average CFM @ 15 Second Run Time 5.75 CFM @ Full Load 23.0 Required Pressure 90 psi Min Hose Size 5/16 in Variable Speed No Throttle Type Needle Valve Control Bearings Ball Housing Material Metal Gear Train 2-Step Planetary Overall Length 20 in