Needle Scaler Kit Body Style - Air Tools Pistol Duty Cycle - Air Tools General Duty Stroke Length 3/4 in Blows per Minute - Air Tools 3 000 Air Inlet Size - Air Tools 1/4 in NPT Average CFM @ 15 Second Run Time 4.4 CFM @ Full Load 4.4 Required Pressure 90 psi Min Hose Size 3/8 in Overall Length 14 3/4 in Design Pistol Shank 1/2 in Housing Lock Needle Throttle Lever Standards ANSI OSHA For Use With Chisels Needles