Wincal Square Axle Bicycle Bottom Bracket with Square Axle Crank Square Hole Bicycle Parts (68x103mm)

• Sturdiness and Durability: The well-designed bottom bracket ensures long-term durability, reduces the frequency of replacement, and increases the service life
• Precise Craftsmanship: The housing made of high-standard steel accurately adapts to the dimensional tolerances at the bottom of the mounting bracket to ensure efficient and practical assembly
• Optimized Protection: The integrated design system not only ensures the safety of the frame, but also improves the overall performance, which has significant advantages over ordinary bottom bracket structures
• Wide Adaptation: This square hole shaft design is especially suitable for 68mm frame hinges, with strong compatibility to meet the needs of different frames
• Installation Recommendations: When installing or replacing the bottom bracket, be sure to use special BB tools to ensure safety and efficiency

Specification: Material: Steel Suitable: for 68mm Frame Shell Size: about 68 * 103mm Cups thread size and pitch: 34.798mm 1.37*24TPI Structure: 2 Bearings Package List: 1 * Quare Hole Axis 2 * Screws