Air Hammer Duty Medium Duty Shank Shape Round Stroke Length 2 5/8 in Air Inlet Size 1/4 in NPT Female Kit Contents (1) Bare Tool (1) Retainer Blows per Minute 3 000 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 25 cfm Air Pressure 90 psi Min Hose Size 3/8 in Accessory Free Tool Change No Lock-On Switch Yes