Air Hammer Duty Medium Duty Shank Shape Round Stroke Length 3 1/2 in Air Inlet Size 1/4 in NPT Female Kit Contents (1) Bare Tool (1) Retainer Blows per Minute 2 000 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 Chisel Power Source Air Powered Air Consumption 8 cfm Air Pressure 90 psi Min Hose Size 3/8 in Material Application Concrete Lock-On Switch Yes