Bicycle Bottom Bracket Quare Hole Axis Bike Parts for Square Tapered Spindle Crank(100x177mm)

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 the frame, more power output, it"s better than ordinary structure bottom bracket. 4. Suitable for 80100mm frame shell. 5. Please use the BB tool to install and replace the bottom bracket for safety. Specification: Material: Steel Suitable: for 80100mm Frame Shell Weight: about 420g14.82oz Size: about 80*142mm100*155mm100*177mm Cups thread size and pitch: 34.798mm 1.37*24TPI Structure: 2 Bearings Package List: 1 * Quare Hole Axis 2 * Screws .The 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 can protect the frame, more power output, it"s better than ordinary structure bottom bracket. Suitable for 80100mm frame shell. Please use the BB tool to install and replace the bottom bracket for safety.