Chicago Pneumatic 711 Regular Duty .401 Zip Gun Air Hammer. This high-speed, lightweight zip gun is a popular choice for muffler and pipe removal, body shop work, shock work, scraping rust, and light front-end work. Quick change retainer for simple accessory changes. Impact parts heat-treated for durability. Ergonomic handle for added operator comfort. 3500 blows per minute. Specifications: shank opening - .401, bore diameter - 3/4", piston stroke - 2 5/8", cfm - 4, hose size - 3/8", bpm - 3500.
