Feature:
1. Made of aluminum alloy, strong and durable, having long service life.
2. Applicable frame five way: 68-73mm, inner diameter 29mm.
3. Sealed silicone rubber waterproof has anti?, waterproof, sand prevention effect.
4. Suitable for integrative crankset, mountain bike replacement accessory.
5. Easy and convenient for installation and disassemble, reliable and durable to use.

Specification:
Item Type: Bottom Bracket
Material: Nylon plastic + aluminum alloy + bearing
Optional Color: Black, Red
Applicable Frame Five-Way: Approx. 68 ~ 73mm / 2.7 ~ 2.9in

Package List:
1 x Bike Bottom Bracket