A. This is a set of fixing screws for mountain bike disc brake calipers, with a specification of M6x18. It is suitable for fixing disc brake brackets of models such as SLX, XT, and XTR. B. This screw kit is made of metal, specifically titanium alloy, which has good quality. The titanium alloy material is not only strong and durable, able to withstand various high - intensity impacts and vibrations during mountain biking, ensuring the stable fixation of the disc brake caliper, but also has good corrosion resistance. Even in harsh riding environments, it can be used for a long time without being easily rusted or damaged. C. Its purpose is clear and important. It is an indispensable accessory in the mountain bike disc brake system. The stable fixing effect allows the disc brake caliper to work accurately, effectively improving the braking performance. It provides reliable braking support for riders on complex mountain roads, making riding safer and smoother. Both ordinary mountain bike enthusiasts and professional mountain bike athletes can benefit from this screw kit. D. This screw kit has been widely sold in regions such as Europe, South America, Southeast Asia, North America, Northeast Asia, and the Middle East and has been recognized by consumers.