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 partThe 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 repaired.Type:ABColour:As ShownMaterial:MetalPackage Contents:1 x 500407 main valve spring1 x 501001 cap gasket1 x 402011 sleeve1 set x o ring kit1 x 500866 piston bumper1 x 402011 sealing sleeve1 x 500407 main value spring1 x 501001 cover washer1 x O-ring kitOnly the above package content, other products are not included.Note: Light reflection 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.