Type Thread Together Frame Type B86/B92(dia46x865/92) PF30(dia46x68/73) Crank Type SHIMANO(dia24) SRAM GXP(dia2422) B86/B92(dia30) B0(dia30) Bearing17/1/13 Let's talk about bottom brackets B0 to Shimano Hollowtech2, for example I see the B0 standard as a good idea, and so far seems the longer lasting and more compatible one The idea of having the bearings easy to replace is a good thing, and so is the narrow bb shell to achieve a low QFactor whenever the cranks are made to be "B0 Shimano bb30/pf30