Fits Profile Hubshells (NOT drivers) and some others:

17MM ID x 30MM OD x 7MM W)For Profile Mini, Totem, Elite Bmx, Elite MTB, & Classic MTB hubs, as well as Fixed/Track Front Hubs, Madera Front Pilot and Madera Rear V-2 hubs.

Price is for SINGLE BEARING and there is 2 per a hubshell for Profile hubs