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: 31.8–34.9 mm / 1.25–1.37 inch installation, E-type installation Effective chain protection: The chain guide helps prevent the chain from falling off and reduces chain interference during riding. It effectively minimizes chain drop and chain skipping. Necessary tool for bicycles: Designed for single-piece flywheels to promote smoother drivetrain performance. Suitable for bikes with 1x drive systems and one-piece sprockets. A practical accessory for bicycle owners looking to enhance their bike setup. Easy to install: No need to disassemble the crank. Simply adjust using a wrench for quick installation. Premium material: Made of high-quality, durable nylon composite material. Lightweight, wear-resistant, and resistant to deformation. Fade-resistant finish: Features a black surface that resists fading. The simple, sleek design is dirt-resistant and complements bicycles of various colors. Notes: 1. Due to variations in screen displays, actual color may differ slightly from the image. 2. If you have questions about sizing, feel free to reach out for guidance, provided for reference only. 3. Mixed item, color, and size orders are accepted. Package includes: 1 pc Bicycle Chain Guide