Needle Scaler Kit Body Style - Air Tools In-Line Duty Cycle - Air Tools General Duty Stroke Length 9/16 in Blows per Minute - Air Tools 12 000 Air Inlet Size - Air Tools 1/4 in NPT Average CFM @ 15 Second Run Time 6.0 CFM @ Full Load 16.0 Required Pressure 90 psi Min Hose Size 1/4 in Overall Length 8 7/8 in Design Needle Shank Round Housing Lock Needle Throttle Lever Standards ISO 8573-1 Quality Class 2.4.3 For Use With Needles Includes (12) Needles