Air Hammer Duty Heavy Duty Stroke Length 9 in Air Inlet Size 3/8 in NPT Female Kit Contents (1) Bare Tool Blows per Minute 900 bpm Shank Size 0.866 in Air Inlet Gender Female Air Inlet Type NPT Air Inlet Connection Size 3/8 in Compatible Collar Shape None Retainer Type Lock-Spring Power Source Air Powered Air Consumption 40 cfm Air Pressure 90 psi Min Hose Size 1/2 in Material Application Concrete