Description:

- Made of aluminum alloy, sturdy, and lightweight.
- With o design for avoiding between the adapters and frame cup.
- Designed to convert BB30 to BSA, BB68/73, BB51, BB70 bottom bracket.
- Cup diameter .65inch, easy installation.
- most bikes.

Specification:

- Material: Aluminum Alloy

Size Chart:

4.2cm/1.65inch

Package Includes:

2 Bottom Bracket

Note:

Please allow slightly errors due to manual measurement and different monitors.