Widely Application : The Goaycer 4mm Banana Plugs Widely Use for Speaker Wire /Wall Plate /Home Theater / Audio/Video Receiver /Amplifiers and Sound Systems, can be used for both home and professional audio setups. High-quality audio :The Goaycer Speaker Banana plug with 24k gold plating Brass provides corrosion protection and ensures high-quality audio, for secure fits with clarity, natural sonic accuracy and no distortion. Dual screws design : Two screws make the wire connection secure very well,they keeps the wire solidly in place. The closed type isolates wires which keep them from shorting out. Goaycer Speaker Plugs works with Multiple Sizes of Speaker Wire,such as bare wire, spades, or other banana plugs,Compatible with 12AWG to 18AWG speaker wire cable The banana plugs for speaker wire also feature a color-coded design for easy identification of positive and negative connections. The red and black rings help you to identify which wire goes where, making installation and troubleshooting a breeze. These speaker connectors are a must-have for anyone who wants to achieve the best possible sound quality from their audio system.