Air Hammer, Duty Heavy Duty, Shank Shape Round, Stroke Length 4 in, Air Inlet Size 3/8 in NPT Female, Kit Contents (1) Bare Tool, Blows per Minute 1,480 bpm, Shank Size 0.68 in, Air Inlet Gender Female, Air Inlet Type NPT, Air Inlet Connection Size 3/8 in, Compatible Collar Shape Oval, Retainer Type Lock-Spring, Power Source Air Powered, Air Consumption 29 cfm, Air Pressure 90 psi, Min. Hose Size 1/2 in, Material Application Concrete WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov -