T47ADUB Bottom Bracket Fits 68mm/73mm Width of Bicycle Frame(Black)

1. Connect the bicycle frame, with strong stability
2. Material: aluminum + nylon + bearing
3. Size: outer diameter 47mm, inner diameter 28.99mm
4. Inner hole: 47mm
5. BB-frame width: 68mm/73mm
6. Net weight: 112g
7. Packing list: 1 x bottom bracket x 1, 2mm rubber ring x 1, 4mm rubber ring x 1