Contains all o-rings needed for five standard rebuilds of your marker in a plastic divider box, sorted by o-ring size * Contains o-rings for your marker"s firing assembly (bolt), high pressure regulator, LPR (if applicable), etc * Don"t be fooled by competitor"s kits that only offer a fraction of the o-rings needed to rebuild your marker * Includes o-ring placement list as well as a real-size o-ring size chart to quickly match o-ring sizes * All of our buna o-rings exceed ASTM standards. We are proud to offer the highest quality products in the industry