Yolleach is pleased to be of service to you! Yolleach 0 gauge wire connectors are made of high quality nickel-plated brass and are designed to ensure optimal power transfer and low resistance for improved musical sound quality0 gauge wire connector connectors feature deep recessed wire grooves and an oversized set screw to hold wires securely in place, preventing accidental disconnections or interference.The 0 gauge battery cable connector's bolt ring is 11.7 mm (approx. 0.46 mm) in diameter, and the length is 30 mm(1.18 in) , making the 0 gauge cable connector perfect for automotive battery connections, audio cable connections, and other 0 gauge wire extensions. Each package includes 4pcs 0 gauge wire connectors, 8pcs* screws and 1pc hex wrench to help you install and maintain easily. Whether you are upgrading your car stereo system or need to extend or connect cut 0 gauge wires, 0 gauge wire connectors are your best choice.Yolleach 0 gauge wire connectors help you enjoy a better life.