【FLEX PIN DESIGN WITH DUAL SCREWS】KUYIOHIFI banana plug connectors with flex pin Plug type provide optimum signal transfer from speaker wires. The dual screws keep the speaker wire connection strong and secure. 【GOLD PLATED CONNECTORS WITH COLOR CODED】Speaker banana plugs made of non-magnetic heavy duty aluminum shell and magnetic gold-plated refined copper pins. Gold plated speaker connector pins resist corrosion for long lasting use. Our speaker connectors are treated with non-conductive coating to ensure it will not short-circuit your system. 【FAST & EASY TO INSTALL】Welding-free design design Banana plugs make speaker wire installation a breeze and are perfect for spring terminal connectors, speaker wire connectors, speaker wire, wall plate, home theater, audio/video receiver, amplifiers and sound systems. 【WORKS WITH MULTIPLE SIZES OF SPEAKER WIRE】KUYIOHIFI audio banana plug supports 12 awg, 14 awg, 16 awg, 18 awg speaker wires (Suitable for speaker wires between 0.75mm and 4mm diameter). 24K gold plating for durability and maximum signal transfer Double screws to secure speaker wire to connector Non-Conductive coating on casing to prevent shorts Accepts wire size up to 4mm For use in any spring-loaded terminals or any system requiring bare wire inputs