Product Features: Hi-End Quality Design: Made from premium pure copper, ensuring high-fidelity signal transmission. Perfect for audiophiles and professional audio engineers. Dual Plating Process: Gold or nickel plating enhances oxidation resistance, prolongs product life, and improves sound quality. Universal Compatibility: Standard 4mm diameter fits various audio devices, amplifiers, and speaker cables, offering effortless connections. Ideal for DIY Audio Systems: Specially designed for custom-built speakers and audio cables, making it an excellent choice for upgrading sound systems. Durable and Reliable: Crafted with superior materials and excellent workmanship, combining aesthetics with functionality to meet diverse usage scenarios. Applications: DIY passive speaker projects Upgrading existing speaker connection systems Professional audio setups and home Hi-Fi systems Easy Installation & Enhanced Sound Quality: These banana plugs are simple to install, ensuring a secure connection for stable signal transmission and minimal sound quality loss. Whether you're a DIY enthusiast or an audiophile, this product is designed to meet your needs!