Bicycle Chain Catcher: This bicycle chain catcher can protect the chain, making it not easy to jump and drop. High Quality Material: It is strong and made of aluminum alloy, it features high hardness, and can be used for a long time. Good Bicycle Accessories: The bike chain stabilizer used for sprocket, using it can make the ride smoother, providing you with a good riding experience. Features: Suitable for road bike to use, portable compact size design and lightweight, the surface is smooth. Easy to Install: The installation is simple and fast, this product is simple and good appearance adds much more fashion to your bike. Specification: Material: Aluminum Alloy Size Chart: 10.5cmx1.35cmx9.5mm/4.13inchx0.53inchx0.37inch Package Includes: 1 Bicycle Chain Catcher with Accessories Note: 1. Please allow slightly error due to manual measurement.