Needle and Chisel Scaler, Body Style - Air Tools In-Line, Duty Cycle - Air Tools Industrial Duty, Stroke Length 1 17/32 in, Blows per Minute - Air Tools 4,800, Air Inlet Size - Air Tools 1/4 in NPT, Average CFM @ 15 Second Run Time 3.1, CFM @ Full Load 12.4, Required Pressure 90 psi, Min. Hose Size 3/8 in, Overall Length 14 5/8 in, Housing Lock Bayonet Needle, Throttle Lever, For Use With Chisels, Needles, Includes Angle Chisel, Flux Chipper