Air Hammer Kit 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 (4) Chisels Blows per Minute 2 300 bpm Shank Size 0.401 in Air Inlet Gender Female Air Inlet Type NPT Air Inlet Connection Size 3/8 in Compatible Collar Shape Round Retainer Type Spring Power Source Air Powered Air Consumption 4 cfm Air Pressure 90 psi Exhaust Location Top Min Hose Size 3/8 in Material Application Steel