Features: Crafted from aluminum alloy, this mountain bike bottom bracket tool delivers wear resistance and corrosions protections, ensuring long durability. Its fits multiple bottom bracket standards without adapters, eliminating installation hassles across diverse mountain and city bike models. Ideal for bike owners and maintenance riders, it empowers cyclists to upgrade drivetrain components while maintaining great performances across their bikes. Whether tackling mountain trail or navigating city commutes, the light weight construction reduces bike weight while sustaining precisions power transfer. Featuring modulars architecture for tool frees disassembly, this bottom bracket socket simplifies routine repair, enabling effortless maintenance, Specifications: Materials: Aluminum Alloy Color: As The Picture Shows Specifications: (Optional) 5 Specifications are Available as Shown in the Picture. Size: As The Picture Shows Package Includes: 1Pc Bike Bottom Bracket Sleeve note: Please allow 1-2cm error due to manual measurement. Please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks!