Needle and Chisel Scaler Kit Body Style - Air Tools In-Line Duty Cycle - Air Tools Industrial Duty Stroke Length 1 in Blows per Minute - Air Tools 4 300 Air Inlet Size - Air Tools 1/4 in NPT Average CFM @ 15 Second Run Time 10.0 CFM @ Full Load 10.0 Required Pressure 90 psi Min Hose Size 3/8 in Overall Length 8 5/8 in Design Straight Shank 1/2 in Housing Lock Chisel Throttle Lever Standards ANSI OSHA For Use With Chisels Needles Includes Quick Change Collar Retainer