Check the listing for details. 4mm High Current Banana Plugs Stackable 32A Screw Type Solder Banana Connector. Condition: New. Listed at 12.99 USD. Peakelect - Make something different. At Peakelect, we strive to provide high quality tools and accessories that inspire our consumers to live a more convenient and enriched lifestyle. Our unlimited passion for innovation and solutions drives us to move forward. We have strong belief that only if we have a deep understanding of people’s needs and desires, we can make our products become different, which may make your life different. 4mm stackable banana plugs are perfect for engineers or DIY enthusiasts. They are made of high quality material and come with 10PCS which can save you much and always have a backup. There are two ways to connect these banana plugs to bare wires. One is to directly weld the end of the metal rod, and the other is to fix and crimp with screws. Just for your choice.