Needle and Chisel Scaler, Body Style - Air Tools In-Line, Duty Cycle - Air Tools General Duty, Stroke Length 1 17/32 in, Blows per Minute - Air Tools 4,600, Air Inlet Size - Air Tools 1/4 in NPT, Average CFM @ 15 Second Run Time 3.2, CFM @ Full Load 13.0, Required Pressure 90 psi, Min. Hose Size 3/8 in, Overall Length 18 in, Housing Lock Adjustable Collar, Throttle Lever, For Use With Chisels, Needles, Includes Needle Scaler