- Versatile Design: Our chain guide is compatible with various bicycle types, featuring adjustable chain and connecting rod positions for optimal fit. Dimensions: Chain guide - 20.5 cm x 20 cm (8.07 in x 7.87 in); Mounting seat - 6.8 cm x 7 cm (2.68 in x 2.76 in). - Premium Material: Crafted from high-quality aluminum alloy, this chain guide is lightweight yet durable, enhancing your riding experience with superior strength and reliability. - Wide Application: This bicycle chain guard is an essential tool for bike owners looking to upgrade their rides. Its simple and elegant design complements bicycles of different colors and styles. - Easy Installation: The chain guide comes with a seat tube clamp for straightforward installation. Adjustments can be made using a wrench without the need to disassemble the crank. Use Cases: 1. Perfect for mountain biking, ensuring your chain stays in place on rugged trails. 2. Ideal for road cycling, providing smooth and efficient gear changes during long rides. 3. Suitable for casual biking, enhancing overall bike performance and prolonging chain life.