Kit - 0.401 Inch Air Hammer, Round Shank, Stroke 2.64 in, Bore Diameter 0.75 in - 3000 BPMMfr # CP7111HK Item Pneumatic Hammer Blows per Minute 3,000 bpm CFM @ Full Load 25. 0 Shank Type Round Handle Type Pistol Grip Duty General Min. Hose 3 8" Required Pressure 90 psi Air Inlet 1 4" npt Features Easy Change Retainer For Quick Accessory Change, Fast Cutting Action Includes Flat Chisel; Tapered Punch; Spot Weld Splitter; Single Blade Panel Cutter; Edging Chisel; Quick Change Retainer; Oiler Tool Weight 3. 5 lb Standards ISO 28927 9 Sound