A. This carburetor is specifically designed for certain compatible models, specifically the PUCH models. It comes in two sizes, 12mm and 15mm, to meet different usage needs. B. In terms of design, it is carefully crafted to provide good performance for mopeds. The unique design helps mopeds run more smoothly during operation, offering users a good experience. C. In terms of application, it is mainly used in races and can effectively enhance the power of mopeds. Whether in intense race scenarios or daily rides, it can inject strong power into mopeds, making rides easier and more efficient. D. Due to its excellent design and practical application, this carburetor is popular in regions such as Africa, Europe, South America, Southeast Asia, North America, Northeast Asia, and the Middle East. It also has an authorized private - label brand, and its quality is reliable.