A. This protective cover for the paint of mountain bike and road bike frames, as well as the protective rubber for brake and gear cables, features a universal design and can fit various types of mountain bikes and road bikes. It is made of thermoplastic rubber (TPR), a material with good performance. B. It can effectively protect the paint of the bicycle frame during daily rides, reducing scratches and wear, and keeping the bicycle looking good for a long time. It also provides effective protection for brake and gear cables, reducing the erosion of the cables by the external environment, extending their service life, and ensuring the stable operation of the brake and gear systems. C. The specifications of this protective cover are reasonably designed. It can perfectly fit both high - performance bicycles used by professional cycling enthusiasts and bicycles used by ordinary consumers in daily life, providing reliable protection for the key components of the bicycle. D. It is a good choice for improving the durability and stability of the bicycle.