[High Quality] Rust-proof, wear-resistant, easy to clean
[Easy to install] Just use the Velcro (included on the back) to connect the chain, then turn the sprocket to confirm that the chain is firmly connected
[Smooth movement] Double X-bridge shape can realize super fast and smooth movement. Internal and external panel chamfering and anti-stretch treatment
[Applicable] Suitable for 11-speed road and mountain bikes.