Needle and Chisel Scaler Kit, Body Style - Air Tools Pistol, Duty Cycle - Air Tools Industrial Duty, Stroke Length 2 1/4 in, Blows per Minute - Air Tools 3,000, Air Inlet Size - Air Tools 1/4 in NPT, Average CFM @ 15 Second Run Time 6.0, CFM @ Full Load 24.0, Required Pressure 90 psi, Min. Hose Size 3/8 in, Overall Length 6 3/4 in, Design Ergonomic, Throttle Trigger, Includes Chisel with Retainer