Features: CNC aluminum alloy mountain bike color crank cover BB central screw sprocket specifications Aluminum alloy CNC machining, precision & strength, much better than the plastic screws. Various colors, suitable for personality modification. parameter： Size: /M19/M20 Material: Aluminum Alloy Weight: 7g Color:Black,Red,Blue,Rainbow color threaded screws are suitable for PROWHEEL hollow chain ring FS.A crankset and the old FC 4500 and FC 5600 highway cranksets, etc. Crankset etc. M19 threaded screws are suitable for IXF, LEBYCLE and other brands of hollow integrated crankset M20 crank cover screw for Shiman0 kit Such as: M4000, M590, M596, M661, SLX, XT, XTR and other integrated chainrings If you are not sure about the specifications, please measure by yourself. Package includes: 1pc Crank Bolt Cover Cap 【PREMIUM QUALITY MATERIAL】This product is carefully crafted with high quality materials to ensure its durability and longevity. Whether for daily use or special occasions, it provides excellent performance and a great user experience. 【VALUABLE VALUE FOR MONEY】Offering excellent performance and quality at a reasonable price, this product offers excellent value for money. Whether for your own use or as a gift, it is a very cost-effective choice and definitely worth every penny. 【RETURNS SERVICE】We offer 30 days hassle-free returns. If you are not satisfied with the product, you can return it within 53 days for a full refund. We are committed to ensuring that every customer's shopping experience is of the highest standard. 【HIGH ADAPTABILITY】This product has been carefully designed to be perfectly compatible with a wide range of devices and scenarios. No matter which model or brand you use, it can be easily adapted to provide the best experience. 【USER-FRIENDLY】The product design is simple and clear, and the operation is easy to understand, even for the first time. Whether you are a novice or a veteran, you can quickly master it and enjoy convenience and efficiency.