The bicycle integrated bottom bracket conversion sleeve is designed to seamlessly fit various bottom bracket sizes, ensuring compatibility and smooth performance. Ideal for cyclists looking to upgrade or replace their existing bottom bracket, this conversion sleeve offers a reliable solution. Simply install the sleeve into the bottom bracket shell, and it will adapt to different diameters, providing a secure and efficient connection. Features -Color:Silver -Material:Aluminium Alloy -Size:2.50X2.50X1.00cm/0.98X0.98X0.39in -High compatibility: compatible with various bottom bracket conversion sleeves, making it easy for users to replace and upgrade their bike components -Durable: made from durable materials that ensure durability and excellent resistance to corrosion -Precision machining: the precise machining process the stability and reliability of the product, ensuring a smooth riding experience -Easy installation: simple installation steps allow users to easily install and adjust the bottom bracket conversion sleeve on their own -Enhanced riding experience: using the bottom bracket conversion sleeve can significantly improve the bike's performance and riding comfort Package list: 4 x Bicycle Bottom Bracket Adapter