Include:1pc Bumper; 1pc Piston Driver; 1pc Ribbon Spring; 1pc O-Ring; 1 set Gasket Kit AftermarketPiston Bumper ,Gasket Kit, O-Ring,Ribbon Spring For Compatible with: for : NV65AC Coil Pallet Nailer, NV50A1 Light-Duty Coil Utility Nailer, NV50AP2 Full Round Head, Coil, Wire Collation Pasti-Tacker Plus, NV65AA Nailer These parts install quickly to make your nailer work like new again. colour: black + red Material: Metal + Plastic Package Contents: 1 set x Gasket Service Kit Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.