Compatible Frame Standards: BSA Compatible Crank: ROTOR BB30 / FSA BB386 EVO Compatible BB Size: Inner Diameter 1.37" x 24T / Shell Width 68mm Bearing Material: NRS Coating G5 Ceramic Body Material: 7075 T6. Full CNC-MACHINED Weight: 3.4 oz (94 g) Assembly Tool: Use WISHBONE WRENCH-0004