Cut old rusty bolts, spot welds and sheet metal with the convenience of a 4,500 BPM Air Hammer. This kit includes a lightweight aluminum pistol grip air hammer with hardened steel barrel and piston, 5 popular chisel styles, retainer spring, quick connect coupling, lubricating oil and molded case. The air hammer features 5 CFM average air consumption, 90 PSI operating pressure, 1/4" NPT inlet and weighs 3.7 lbs.