Standard 4 mm diameter pin for broad compatibility with most 4 mm banana jacks and speaker terminals. Sturdy plated construction: these plugs are plated and oxidationproof, providing reliable signal transfer and a clean, professional finish. Ideal replacement set: package includes 10 quality banana plugs, for replacing broken connectors in your audio system. Stackable design: the plug design can be stacked with existing 4 mm banana plugs, enabling easy expansion of your speaker setup. Use scenarios: Replacing damaged or worn banana plugs on home stereo or home theater systems to restore secure connections. Upgrading or extending speaker runs in multiroom or larger setups without changing cables. DIY speaker projects or professional installations that require reliable, easyto connectors with a neat appearance. Key attributes at a glance: 4 mm standard pin size, compatible with most speakers and banana jack sockets, corrosionresistant plating, 10count pack, stackable for scalable installations.