250-Pack 608B-2RS Sealed Bearings - Bronze Cage & yellow Seals 8x22x7mmPack of 250 608B 2RS Sealed Bearings with Bronze Cage and yellow Seals 8mm x 22mm x 7mm Metric 250 608B 2RS Sealed Bearings, Deep Groove Radial Ball Bearings, bearings are black and have Bronze Cage that would make them faster, bearings have 2 Removable yellow Seals, Made from high strength chrome steel for durability and performance, each bearing has 2 Removable yellow Seals to protect the bearing from dust or any possible contamination, also