If you have a Cervelo, chances are your bike has the BBright bottom bracket standard. P5s don't; same with older frames. Fitting SRAM and Quarq cranks into this 75mm wide, 42mm diameter shell, this bottom bracket, complete with CeramicSpeed bearings, needs to be pressed in.The unit comes with either CeramicSpeed Standard or Coated Bearings installed into cups. Super smooth, super round CeramicSpeed balls contained in hardened-steel races are found on both versions. The Coated version has a metallic coating laid onto the races, making it even smoother and harder, resulting in lower drag and longer life.In The Box:- 2 cups with bearings installed- 2 dust covers- 1mm spacer- 0.5mm spacer- GXP wave washer- Spacer tube- 10ml syringe of CeramicSpeed All Round Grease- Sticker sheetFrame & Axle: Press-fit BBright / 24/22,2mmThread: PF w/cupMaterial: AlloyBearings: CS 61805Crank Compatibility: SRAM GXP 24 / 22,2mm