Color: As shown Name: Universal Chain Stabilizer Material: Nylon plus fiber + plastic Weight: Approximately 45.3 g Compatibility: Designed for bicycles with a 1x drive system and one-piece sprockets Specifications: 31.8–34.9 mm (1.25–1.37 inches), E-type installation Effective chain protection: Helps prevent the chain from falling off or skipping during骑行, providing reliable chain retention and reducing chain interference. Essential bicycle accessory: Ideal for use with single-piece cassette systems to promote smoother drivetrain performance. Suitable for bikes with 1x drive systems and one-piece sprockets. Easy installation: No need to remove the crankset. Simply adjust using a wrench for quick setup. High-quality material: Constructed from durable, reinforced nylon and plastic for lightweight strength. Resistant to wear and deformation. Fade-resistant finish: Features a black surface coating that resists fading and discoloration. The sleek black design is dirt-resistant and complements various bike frame colors. Note: - Actual product color may vary slightly due to differences in screen display. - For sizing assistance, feel free to reach out for guidance. Suggestions are provided for reference only. - Mixed orders of items, colors, and sizes are accepted. Package includes: 1 x Bicycle Chain Guide