[Sturdy and Durable]: The bicycle bottom bracket is solid and durable with a long service time. The steel shell can absorb roundness tolerance for installing ports of Bracket Bottom
[Integrated System]: Integrated system can protect the frame, more power output, its better than ordinary structure bottom bracket
[Sealed Cartridge Bearings]: Sealed cartridge bearings, Suitable for 68mm frame shell. Waterproof, dust bearing and bearing shield design, which can help to prevent the erosion of sediment water
[Easy to Use]: Please use the BB tool to install and replace the bottom bracket for safety
[100% Satisfaction]: If you have any question about this item, please feel free to contact us, we will help you within 24 hours