Supplier's description: The BlackBearing Ceramic Hydrid bearing is perfect to optimize performace with its low friction. Silicon nitride balls SI3N4 Steel rings SAE52100 / stainless steel KS440 with optmized internal...
Supplier's description:The BlackBearing B5 range is a high quality bearing upgrade to perform in the most extreme circumstances. - Chrome steel balls SAE52100 abec 5 - Steel rings SAE52100 with...