Check the listing for details. Bicycle Chain Guide Clamp Mount Chain Guide Direct Mount E Type Adjustable TD6. Color: Black, Condition: New. Listed at 19.79 USD. Description: This bike chain single-disc guide can guide the chain and protect the chain,making it not easy to jump and drop. It is strong and made of aluminum alloy,it features high hardness,can be used for a long time. It is used for single-disc sprocket,using it can make the ride smoother,providing you a good riding experience. The installation is simple and fast,and you can use wrench to adjust it,no need to remove your cranks. It is suitable for mountain bike to use,it designed with compact size and is lightweight,the surface is smooth and burr free. Specification: Material: Aluminum alloy. Color: Black. Size: 12*10*5cm. Package included: 1* Chain guide. 4* Gasket. 1* Frame protector. On Jul-19-21 at 23:07:16 PDT, seller added the following information: