Needle and Chisel Scaler Kit Body Style - Air Tools Pistol Duty Cycle - Air Tools Industrial Duty Stroke Length 2 1/4 in Blows per Minute - Air Tools 3 000 Air Inlet Size - Air Tools 1/4 in NPT Average CFM @ 15 Second Run Time 6.0 CFM @ Full Load 24.0 Required Pressure 90 psi Min Hose Size 3/8 in Overall Length 6 3/4 in Design Ergonomic Throttle Trigger Includes Chisel with Retainer