These are replacement bearings for all Profile Racing hub shells. They also fit Madera Front and Rear hubs. They are sealed and self-lubricating. There are two (2) of these bearings in a Profile Racing cassette hub. The vast majority of profile hubs use MFG # 6903. Price is for set of two (2) bearings. Bearing seal color subject to change without notice.
These bearings are for the profile mini hubs. If you need bearings for any other hub please email us.