Needle and Chisel Scaler Kit Body Style - Air Tools In-Line Duty Cycle - Air Tools Industrial Duty Stroke Length 1 19/64 in Blows per Minute - Air Tools 4 600 Air Inlet Size - Air Tools 1/4 in NPT Average CFM @ 15 Second Run Time 3.65 CFM @ Full Load 10.0 Required Pressure 90 psi Min Hose Size 3/8 in Overall Length 16 1/2 in Housing Lock Bayonet Needle Throttle Lever Standards ISO15744 ISO8662-14 For Use With Chisels Needles