Upgrade your bicycle's performance with these premium hybrid ceramic ball bearings. The innovative hybrid construction combines ceramic balls with precision bearing steel races to significantly reduce friction and deliver smoother rotation compared to standard bearings. Each pack includes 2 bearings compatible with common sizes including 6800, 6802, 6805, 6806, 6900, and 6902 2RS series. The double rubber seal (2RS) design provides excellent protection against dust, dirt, and moisture, helping maintain optimal performance in various riding conditions. These bearings are engineered for durability and consistent operation, making them ideal for both competitive cyclists and everyday riders looking to enhance their bike's efficiency. The bearings come ready for installation and are manufactured to precise specifications in mainland China. Whether you're upgrading your wheel hubs, bottom bracket, or other bearing applications, these hybrid ceramics offer reduced rolling resistance and improved longevity compared to traditional steel bearings.