Air Chipping Hammer, Industrial Duty, Average CFM @ 15 Second Run Time 8.2, 32 CFM, Stroke 2 In, 2400 Blows per Minute, Min Hose 1/2 In, Air Inlet NPT 3/8 In, Required Pressure 90 PSI, Length 12 7/8 In, Shank Size 0.68 In, Round Shank Type, Pistol Handle, Includes Chisel Retainer