Package Includes: as images show, 1pack Gasket Kit, 878-179 Piston Bumper 1pcs, 877-993 Bumper Sheet 1pcs.  Fit for :Nv45ab2 parts Fits for NV45AA NV45AB NV45AB2 NV45AC NV45AE Roofing Nailer Replacement Parts  High Quality：This part is made of high quality material, wear-resistant, durable and long-lasting. Extend the life of the tool by replacing worn or damaged parts. It is a perfect replacement for your damaged or worn-out part  Easy Installation；The Kit can fully meet everything you need for repairs, and it is easy to install, you don't need any complicated steps to get your roofing nailer repaire  Please kindly confirm the size and model before ordering