Chicago Pneumatic Sales [Power Tools Division] offers Heavy Duty Air Hammer. Chicago Pneumatic Sales [Power Tools Division] supplies ratchets wrenches, drills, screwdrivers, grinders etc. Heavy Duty Air Hammer is used for bolt and rivet shearing, bushing driving and overall front end work. Heavy Duty Air Hammer is provided with integral muffler which minimizes exhaust sound. The model no. Of this type of hammer is CP715.