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 chain guide is 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 the sprocket, using it can make the ride smoother, providing you with a good riding experience. Features Design: The chain catcher drop keeper is suitable for road bikes, portable and lightweight compact size design, and smooth surface. Easy to Install: The installation is simple and fast, this product is simple and good appearance adding much more fashion to your bike. Specification: Material: Aluminum Alloy Size: 1.5cmx0.95cm/0.59inchx0.37inch Package Includes: 1 set Chain Stabilizer Note: Please allow slightly errors due to manual measurement and different monitors.