MAX Premier Ceramic Bearing Why ceramic bearings ? - Improve casting distance up to 20% compared with normal bearings - Extremely durable by high hardness and corrosion resistance - Extremely high surface quality by greater rigidity - Better emergency running characteristics compared to steel ball bearings - Low tare weight, 40% lighter than bearings made of rolling bearing steel - Extreme heat, chemical & corrosion resistant - Withstand temperature resistance from -50 up to +240°C Specification - Made from High Quality ceramic material and is harder than normal bearing or white ceramic bearing - Rubber Shield to prevent contamination and easy maintainance - Ball bearing: Black Ceramic Ball, Stainless Steel Roller Cage Steel * Silicon Nitride (SiN4) * Alumina Oxide (Al2O3) * Zirconia Oxide (ZrO2) * Silicon Carbide (SiC) * Coated Ceramic Balls Please Check correct size before buying ( Price is for per piece ) Refer to graph and check Inner Diameter X Outer Diameter X Width ( ID X OD X W ) Select Type: R = Rubber Seal Shopee: https://shopee.com.my/MAX-Premier-Ceramic-Bearing-for-BB-Wheels-i.93180824.10813494188