Kit contains all bearings & seals required to re-fit a wheelWheel bearings typically fail from water and dirt contamination. the All Balls wheel bearing was developed in partnership with KML Bearing and is designed for the difficult operating environment of the power sport industryPremium emq quality, hi-speed bearing featuring low drag, double lip rubber seals which provide superior exclusion of water, dirt and improved grease retentionType tc nitrile elastomer wheel seals are specifically designed to keep out water and dirtRubber coated outside diameter creates an optimum seal at hubSteel garter spring guarantees constant pressure on the axle shaft over the life of the seal