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