When bearings have to be pressed directly into the frame, it is of the upmost importance that the bearings are of the highest quality - The bearings in this Prime BB30 Bottom Bracket are exactly that.
Features:
Bearing: Premium Stainless Steel
Frame Type: BB30
Crank Type: SRAM (30mm) or Shimano/FSA (24mm) when used with the Prime Bottom Bracket Adaptor (PF30 - Shimano)