Wheels Manufacturing 6000 RS Steel Bearing High quality steel cartridge bearings for a high quality repair Where most bearings available after market are grade 300, up to 3/10 of a millimeter out of round, the equivalent of a human hair, Wheels Manufacturing produce a much higher grade steel bearing that's found in high-end Shimano and Campagnolo hubs and other high-grade components Heat treated steel races and sealed for longevity Grade 25 refers to the roundness where these bearings can be up to 25/1000 out of round; 1200 % higher quality than low-end bearings These bearings increase the likelihood that your repairs have lasting quality results Comes as a pair |  |