Air Hammer Duty Medium Duty Shank Shape Round Stroke Length 2 3/4 in Air Inlet Size 1/4 in NPT Female Kit Contents (1) Bare Tool (1) Retainer Blows per Minute 1 800 bpm Shank Size 0.498 in Air Inlet Gender Female Air Inlet Type NPT Air Inlet Connection Size 1/4 in Compatible Collar Shape Round Retainer Type Chisel Power Source Air Powered Air Consumption 12 cfm Air Pressure 90 psi Min Hose Size 3/8 in Material Application Concrete Lock-On Switch Yes