To install, simply insert the sleeve into the bottom bracket shell. The sleeve is designed to adjust automatically, accommodating various sizes to ensure a snug and secure fit. This innovative feature eliminates the need for multiple adapters, making it a versatile and convenient solution for cyclists. The sleeve's durable materials and precision engineering provide durability and reliability, ensuring optimal performance and longevity. Whether you're upgrading your bike or performing routine maintenance, this sleeve offers an easy and way to achieve a fit for your bottom bracket. Features -Color:Silver -Material:Aluminium Alloy -Size:2.50X2.50X1.00cm/0.98X0.98X0.39in -Versatile compatibility: designed to fit a wide range of bottom bracket conversion sleeves, providing flexibility for various bike models and upgrades - durability: constructed from durable materials that offer exceptional durability and resistance to wear and tear -Accurate engineering: precisionengineered to ensure a fit and optimal performance, enhancing the overall stability of the bike -Easy to use installation: the straightforward installation process makes it easy for users to set up and adjust the conversion sleeve without special help -Improved bike performance: the bottom bracket conversion sleeve enhances the bike's efficiency and comfort, leading to a better riding experience Package list: 1 x Bicycle Bottom Bracket Adapter