Air Hammer Duty Heavy Duty Shank Shape Round Stroke Length 4 in Air Inlet Size 3/8 in NPT Female Kit Contents (1) Bare Tool (1) Retainer Blows per Minute 1 480 bpm Shank Size 0.68 in Air Inlet Gender Female Air Inlet Type NPT Air Inlet Connection Size 3/8 in Compatible Collar Shape Round Retainer Type Rubber Buffered Power Source Air Powered Air Consumption 29 cfm Air Pressure 90 psi Min Hose Size 1/2 in Material Application Steel