Sealing Rings: Come with for sealing rings, the for Sealing can increase air tightness and the nut from loosening Multifunctional Wrench: It can be used not only to install the nozzle nut, but also to the detachable for core assembly and the detachable nozzle extension rod : Bike Vacuum Tire for Nut and stable aluminum alloy, it is long-lasting and stable for ensuring long term use You Will Get: The package includes 2, 2 sealing rings and 1 inner tube wrench ( Note: please put the sealing first when installing, and then tighten the nut Lightweight: for reduce the on the and greatly reduces the on the wheel balance, allowing the to get better, Manufacturer: HDOYTXXM