Needle Scaler Kit Body Style - Air Tools In-Line Duty Cycle - Air Tools General Duty Stroke Length 1 1/8 in Blows per Minute - Air Tools 4 800 Air Inlet Size - Air Tools 1/4 in NPT Average CFM @ 15 Second Run Time 8.0 CFM @ Full Load 20.0 Required Pressure 90 psi Min Hose Size 5/16 in Overall Length 18 1/4 in Housing Lock Needle Throttle Lever Includes (19) Needles with Chisel Attachments