Air Hammer Duty Heavy Duty Shank Shape Round Stroke Length 3 1/2 in Air Inlet Size 1/4 in NPT Female Kit Contents (1) Bare Tool (1) Quick Change Retainer Blows per Minute 2 530 bpm Shank Size 0.401 in Air Inlet Gender Female Air Inlet Type NPT Air Inlet Connection Size 1/4 in Compatible Collar Shape Round Retainer Type Quick Change Power Source Air Powered Air Consumption 24 cfm Air Pressure 105 psi Min Hose Size 3/8 in Accessory Free Tool Change Yes