Color as shown Name: Universal Chain Stabilizer Material: Nylon plus fiber + plastic Weight: About 45.3 g Compatible: Fits bikes with 1x drive system for one-piece sprockets Specifications: 31.8-34.9MM / 1.25-1.37 inch installation / E type installation Effective chain protection: The chain guide helps protect the chain from falling off and reduces chain interference during riding. Helps prevent chain drop and chain skipping. Necessary tool for bicycles: Designed for single-piece flywheel setups to promote smoother drivetrain performance. Suitable for bikes with 1x drive systems and one-piece sprockets. A useful accessory for bicycle owners looking to enhance their bike's reliability. Easy to install: Chain guide installs without removing the crank. Simple adjustment using a wrench. Premium material: Constructed from high-quality nylon and fiber composite with plastic components. Lightweight and durable. Resistant to wear and deformation. Color durability: Features a black finish that resists fading. The simple, classic black design is dirt-resistant and complements bicycles of various colors. Notes: 1. Due to variations in display screens, actual color may differ slightly from the image. 2. If you have questions about sizing, please reach out for guidance. Recommendations are for reference only. 3. Mixed item, color, and size orders are accepted. Package includes: 1 pc Bicycle Chain Guide