1.[Studied Conductivity] This speaker amplifier terminal is made of pure copper to ensure the conductivity of the audio connection. Experience clear sound quality and improved performance every time you use it. It is compatible with a variety of banana plugs, making it easy to enhance your audio setup. 2.[Versatile Compatibility] Designed to work seamlessly with a variety of connection types, this terminal can accommodate 4mm banana plugs, spade terminals, and bare wires. Its versatility makes it a must-have component for any audio enthusiast looking to optimize their speaker connections. 3.[Secure Screw Crimping Design] The innovative screw crimping method provides a reliable and secure fit for all your audio components. This ensures a stable connection during operation, reducing the risk of sound interruption or disconnection during use. 4.[Safety Insulation] This terminal features a solid insulation design to minimize the risk of accidental short circuits and ensure operation. It is an ideal choice for those who prioritize improving the performance of their audio equipment.