Air Hammer, Duty Heavy Duty, Shank Shape Round, Stroke Length 3 3/8 in, Air Inlet Size 3/8 in NPT Male, Kit Contents (1) Bare Tool, (1) Retainer, Blows per Minute 1,500 bpm, Shank Size 0.498 in, Air Inlet Gender Male, Air Inlet Type NPT, Air Inlet Connection Size 3/8 in, Compatible Collar Shape Round, Retainer Type Chisel, Power Source Air Powered, Air Consumption 13 cfm, Air Pressure 90 psi, Min. Hose Size 1/4 in