A. This car audio modification product includes a one - input two - output ground wire box, junction box, hub, splitter, and negative fuse holder. It is compatible with common vehicle models and has a matching relationship with original parts. Its design is very ingenious and is specifically made for car audio modification. It can effectively address the wiring connection issues during audio modification, providing you with a more convenient and efficient modification experience. B. Whether you are a professional car audio modifier or a car enthusiast who loves DIY, you can easily optimize your car audio wiring with its help. C. This junction box and splitter are widely applicable around the world, including regions such as Africa, Europe, South America, Southeast Asia, North America, Northeast Asia, and the Middle East. Its quality has been recognized by markets in different regions. D. In addition, it has an authorized private label. It is reliable in quality and worthy of your trust, which can help you build an ideal car audio system.