1. The bottom bracket is solid and durable with a long service time.
2. The steel shell can absorb roundness tolerance for installing ports of Bracket Bottom.
3. Integrated System can protect , more power output, it's better than ordinary structure bottom bracket.
4. Suitable for 68mm frame shell.
5. Please use the BB tool to install and replace the bottom bracket for safety.

Specification:
Features:
1. The bottom bracket is solid and durable with a long service time.
2. The steel shell can absorb roundness tolerance for installing ports of Bracket Bottom.
3. Integrated System can protect , more power output, it's better than ordinary structure bottom bracket.
4. Suitable for 68mm frame shell.
5. Please use the BB tool to install and replace the bottom bracket for safety.
Specification:
Suitable: for 68mm Frame Shell
Weight: about 316g/11.15oz
Size: about 68 * 118/120/122.5/124.5/127.5mm
Cups thread size and pitch: 34.798mm 1.37*24TPI
Structure: 2 Bearings
Package List:
1 * Quare Hole Axis
2 * Screws