I noticed my wheel didn't spin smoothly when fixing a flat so I decided to repack the bearing grease and lost a bearing. I don't see any brand/model marking on the hub so is there sure way to verify bearing size? I have an old micrometer so I could measure one but it seems there are a lot of different sizes so it would be nice to double check. Bikepedia doesn't list hub specs for the hub. 2009 Giant Cypress DX.