T47 Outboard Angular Contact BB for 30mm cranks Cups have outboard bearings, and can be used in BB shells with widths from 68mm to 100mm Includes a sleeve to fit between cups for added protection from dirt and grime, and also keeps your internal wires and hoses from rubbing on the crank spindle Machined aluminum cups thread together directly into a T47 BB shell Bearings are easily serviced or replaced **Please Note: T47 BB cups are similar to standard BSA threaded cups in that the drive side cup is left-hand thread and the non-drive side cup is right-hand thread - use grease when installing in aluminum or steel and an anti-sieze compatibile with titanium shells 68/73mm T47 30mm Alloy 155g