Wheels T47 Outboard Threaded Bottom Bracket. Features: Precision machined threaded aluminum cups with outboard bearings Fits T47 specific frames (47mm ID) with shell widths ranging from 68mm to 100mm Includes anodized aluminum cups with Enduro sealed bearings Between the cup sleeve is included for added dirt and grime protection, also helps keep internal wires away from the crank spindle 24mm crank spindle diameter fits Shimano Hollowtech II and others Angular contact: Enduro ABEC-5 angular contact bearings Specifications: Frame Interface: T47 (Outboard) Spindle Interface: 24mm (Shimano Hollowtech II, FSA MegaExo, Surly OD, FSA MegaExo Light, RaceFace EXI) Bottom Bracket Shell ID: 47 Shell Width: 68mm, 73mm, 83mm, 100mm Bearings: ABEC-5 Angular Contact Color: Black Weight: 150g