Description: color as shownName: Universal Chain StabilizerMaterial: nylon plus fiber + plasticWeight: approx. 45.3gCompatible: Fits bikes with 1x drivetrain for single sprocketSpecifications: 31.8-34.9MM/1.25-1.37 inch installation/E-type installationEffective chain protection: The chain guide can protect the chain from falling off and avoid chain interference during perfect riding. Effectively prevents the chain from falling off and skipping the chain.Necessary tool for bikes: Used for single flywheel, smoother riding. Fits bikes with 1x drivetrain for single sprocket. Bike accessories are useful tools for bike owners to improve their bikes.[Easy to install]: Our chain guides are easy to install. You don't need to disassemble the crank, just adjust it with a wrench. [Premium material]: The MTB chain guide is made of strong nylon material, which is lightweight and durable. High-strength material, wear-resistant and deformation-resistant.Not easy to fade: The surface of the chain guide is black and not easy to fade. Simple and stylish, black is very resistant to dirt, suitable for matching bikes in different colors.Notes:1. As we all know, different computers display different colors, and the actual color may differ slightly from the image below.2. If you have difficulty choosing a size, you can contact me at any time, we will give you some suggestions, but only for your reference.3. We can accept orders of mixed items, colors and sizes.This product includes:1 pc Bicycle Chain Guide