Enhance your bike's performance and durability with this high-quality bottom bracket, designed specifically for 68mm frame shells. Crafted with a robust steel shell, this bottom bracket effectively absorbs roundness tolerances during installation, ensuring a precise fit and reducing potential frame damage. The integrated system offers superior frame protection and improved power output, outperforming standard bottom bracket designs for a smoother and more efficient ride. Key Features: · Durable and Solid Construction: Built to last with a strong steel shell that provides excellent wear resistance and a long service life. · Roundness Tolerance Absorption: The steel shell design accommodates installation port variances, guaranteeing a secure and reliable fit within the bracket bottom. · Integrated Frame Protection System: Enhances frame durability and delivers greater power transfer, making it more efficient than conventional bottom brackets. · Compatibility: Specifically designed for 68mm frame shells, ensuring wide compatibility with many bike models. · Safe and Convenient Installation: Recommended to use a BB tool for installation and replacement to maintain safety and optimal performance. Specifications: · Suitable Frame Shell Diameter: 68mm · Weight: Approximately 316g (11.15oz) · Size Options: Approximately 68mm x 118mm / 120mm / 122.5mm / 124.5mm / 127.5mm · Cups Thread Size and Pitch: 34.798mm, 1.37 x 24 TPI · Structure: 2 Bearings Package Includes: · 1 x Square Hole Axis Bottom Bracket · 2 x Screws This bottom bracket offers a reliable and efficient upgrade for your bicycle, providing enhanced frame protection and optimized power output. Its sturdy design and precise engineering make it an essential component for cyclists seeking improved durability and performance on every ride.