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 USA ABEC-5 Angular Contact sealed bearings Angular contact ball bearings are particularly suitable for carrying combined axial and radial loads Fits bottom bracket shell widths from 86mm to 92mm and cranksets with 24mm diameter spindles like Shimano, FSA, etc SPECS: Spindle Interface Type: Shimano Hollowtech II , FSA MegaExo , FSA MegaExo Light , RaceFace EXI BB Shell Width (mm): 86 , 92 Bottom Bracket Shell I.D.: 41 BB/Frame Interface: BB86 , BB92 Weight: 100