T47 threaded BB cups for T47 frames and 24mm diameter spindle cranks Cups have outboard bearings, and are typically used in BB shells with widths from 68mm to 100mm Machined aluminum cups thread together directly into a T47 BB shell Bearings are easily serviced or replaced Includes 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 68/73mm T47 Shimano HTII 24mm Alloy 150g