Features 1、Product Usage: This reducer sleeve is suitable for connecting pipes of different diameters together, ensuring a tight fit between the seatpost and frame, improving the stability and comfort of cycling 2、Aluminum Alloy: The seatpost reducer sleeve is made of 6061 aluminum alloy, has high strength, oxidation resisting, light weight, and will not increase the burden on the cycling after installation 3、CNC Machining CD Texture: Featuring fine CNC machining CD texture appearance, adding both aesthetic appeal and glossy finish, making this seatpost reducer sleeve beautiful and practical 4、Wide Compatibility: This seatpost tube adapter is suitable for mountain cycling, road cycling, and more, offering versatile compatibility to meet your cycling needs, has a wide range of applications 5、Compact and Practical: Provide 2 reducer sleeves for easy switching of seatpost when needed, with compact size and lightweight design, easy to install and remove, suitable for daily use or outdoor cycling Item Type: Seatpost Reducer Sleeve Material: Aluminum Alloy Package List 2 x Seatpost Reducer Sleeve