Description 【Broad Compatibility】Compatible with BSA bicycle base threads of 68/80/90/100/110/120 mm. The recommended size is for reference only. Please purchase according to the original size. Installation and replacement can be done using BB tools 【Super-Accurate Bearings】Sealed bearings provide smooth operation and no noise during long-term cycling. Comes with two waterproof and dustproof hex screws to improve service life 【CNC Precision Thread】CNC precision thread, finely crafted& easy to install. Can connect bicycles well and reduce energy loss 【Long Service Life】Bucklos bottom bracket is made of high-quality materials, sturdy and durable, with minimal maintenance 【Brand Service】Please make sure to confirm the correct axle size and length suitable for your vehicle model to ensure compatibility. If you encounter any problems before purchasing, please feel free to contact us at any time ASIN B0D13Z96W9 Customer Reviews 4.6 4.6 out of 5 stars (230) 4.6 out of 5 stars Best Sellers Rank #9,243 in Sports & Outdoors (See Top 100 in Sports & Outdoors) #1 in Bike Bottom Brackets Date First Available April 8, 2024