Features: Premium Stainless Steel Spring Shaft Accessory Specifically designed for NR83 series pneumatic nailguns guns (NR83A, NR83A3S, , .), this resistant replacement set includes essential components like and O type shims for enhanced tool longevity. Comprehensive 10 pieces assembly features 877 323 driver, 878 421 band spring group, and 878 303 bumper, providing complete maintenance solution with factory grade wedges kits and knock resistant buffers for optimal nailguns . Ideal for professional repair technicians, woodworking specialists, and construction crews requiring pneumatic tool replacement parts to maintain heavy duty NR83 series users in operating condition. Perfect for workshop environments and job sites where immediate nailguns repairs are critical, and pneumatic tool maintenance routines. This factory accessory restores nailguns functionality to original specifications through its organized component layout and stainless steel durability. Specifications: Compatible Models: for NR83 NR83A NR83A2 NR83A3 NR83A3S NR83A5Air Air nailguns Parts. Package Includes: 877-323 Driver 877-334 Aftermarket Gasket 877-325 Aftermarket Gasket 877-852 Aftermarket Gasket 877-854 Aftermarket Gasket 877-329 Aftermarket Gasket 878-421 Aftermarket Ribbon Spring Set 878-303 Bumper. Package Includes: 1 piece Air nailguns Rebuild note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.