2x Mountain Hole Integration Close Bearing Bottom Variable Speed Bicycle S
- Sealed bottom bracket, easy to install and operate, its lubricity makes it easier for you to participate in bicycle competition.
- The inner hex waterproof screw, made of high-grade materials and durable.
- Made of quality metal material, high strength, sturdy and durable.
- Suitable for mountain bike, variable speed bicycle, etc.
- Variable speed bicycle riding accessories with waterproof screws, smooth bearing axes, greatly improved wear resistance, not easy to rust.
