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) Spring Retainer Blows per Minute 2 800 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 Spring Power Source Air Powered Air Consumption 5.4 cfm Air Pressure 90 psi Exhaust Location Top Min Hose Size 3/8 in Material Application Concrete