Diameter Size: 27.2 to 30.4mm seatpost shim. Length: 100mm.
Aluminum Alloy Material: Bicycle Reducing Sleeve is made of high-quality aluminum alloy, Lightweight, anti-rust, and can be used for a long time.
Tips: Please measure the outer diameter of the seatpost (or check the size markings on the original tube). Then measure the inner diameter of the bicycle frame. Then choose the appropriate size.
Easy to Install: Boenoea seatpost shim can be installed in just a few seconds, easy to install and disassemble, without the need for other tools.
Wide Application: Bike Seat Post Tube Adapter is compatible with most bicycles, such as mountain and road bikes, MTB, BMX, Fixed Gear bikes, etc.
Description
Please measure the outer diameter of the seatpost (or check the size markings on the original tube). Then measure the inner diameter of the bicycle frame. Then choose the appropriate size.