Areyourshop 20 Pcs 4mm Banana Socket Jack Banana Plug Connector Metal material: zinc alloy This is 4mm diameter banana jacks / sockets / terminals. Suitable for connecting 4mm Banana Plug. Package Included: 20pcs (4pcs Black + 4pcs Red + 4pcs Blue + 4pcs Yellow + 4pcs Green) 100% Brand New and high quality.