Air Hammer Duty Heavy Duty Shank Shape Round Stroke Length 6 in Air Inlet Size 1/4 in NPT Female Kit Contents (1) Bare Tool (1) Retainer Blows per Minute 1 120 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 Standard Beehive Power Source Air Powered Air Consumption 14 cfm Min Hose Size 1/2 in Material Application Aluminum Dural and Soft Iron