Welcome to our store！</br> 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 68mm frame shell. 5、Please use the BB tool to install and replace the bottom bracket for safety. <span style="font-size:16px;font-family:Arial;"><strong>Features</strong>:</span> <span style="font-size:16px;font-family:Arial;"> 1. The bottom bracket is solid and durable with a long service time.</span> <span style="font-size:16px;font-family:Arial;"> 2. The steel shell can absorb roundness tolerance for installing ports of Bracket Bottom.</span> <span style="font-size:16px;font-family:Arial;"> 3. Integrated System can protect the frame, more power output, it's better than ordinary structure bottom bracket.</span> <span style="font-size:16px;font-family:Arial;"> 4. Suitable for 68mm frame shell.</span> <span style="font-size:16px;font-family:Arial;"> 5. Please use the BB tool to install and replace the bottom bracket for safety.</span> <span style="font-size:16px;font-family:Arial;"> <strong>Specification</strong><strong>:</strong></span> <span style="font-size:16px;font-family:Arial;"> Material: Steel</span> <span style="font-size:16px;font-family:Arial;"> Suitable: for 68mm Frame Shell</span><span style="font-size:16px;font-family:Arial;"></span> <span style="font-size:16px;font-family:Arial;"> Size: about 68 * 103/107/110.5/113/116mm</span> <span style="font-size:16px;font-family:Arial;"> Cups thread size and pitch: 34.798mm 1.37*24TPI</span> <span style="font-size:16px;font-family:Arial;"> Structure: 2 Bearings</span> <span style="font-size:16px;font-family:Arial;"> <strong>Package List</strong><strong>:</strong></span> <span style="font-size:16px;font-family:Arial;"> 1 * Quare Hole Axis</span> <span style="font-size:16px;font-family:Arial;"> 2 * Screws</span> Satisfaction - Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We try our best to provide you with satisfactoryaftersalesservice</br>