Wheels MFG BB30 to Shimano 24mm Bottom Bracket Machined aluminum shell threads together for precise bearing alignment and frame fit, reducing bottom bracket creaking and premature bearing wear. Features Replaceable Enduro bearings Made in the USAABEC-5 Angular Contact sealed bearings Angular contact ball bearings are suitable for combined axial and radial loads SPECIFICATIONSMFG#BB30-OUT-3Spindle Interface Type Shimano Hollowtech II , FSA Mega Exo , FSA Mega Exo Light , Race Face EXIBB Shell Width (mm)68 , 73Bottom Bracket Shell I. D. 42BB/Frame Interface BB30Weight127 | Wheels Manufacturing | Bb30 To Shimano 24Mm Bottom Bracket Bb30, 24Mm Spindle, Abec-5 Angular Contact, Black