Color: As shown Name: Universal Chain Stabilizer Material: Nylon plus fiber + plastic Weight: Approximately 45.3 grams 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 use, providing reliable performance on compatible bikes. Essential bicycle accessory: Suitable for single-piece flywheel setups, contributing to smoother drivetrain operation. Ideal for riders using 1x drive systems. Easy installation: No need to remove the crank; simply adjust using a wrench for quick setup. High-quality materials: Constructed from durable nylon composite and plastic for lightweight strength, resistance to wear, and long-term reliability. Durable finish: Features a black surface coating that resists fading and maintains a clean appearance. The classic black color blends well with various bike frame styles and is resistant to dirt buildup. Note: - Actual product color may vary slightly due to differences in screen displays. - For sizing guidance, please refer to product specifications or contact customer service for assistance. - This listing supports mixed orders of items, colors, and sizes when available. Package includes: 1 x Bicycle Chain Guide