RUNCCI-YUN 12PCS 4mm Banana Plug Coupler Female to Insulated Banana...
Standard 4mm banana plug female to female adapter to connect to 4mm banana plug male to male cable. ✔Quantity: 12pcs (6pcs Red + 6pcs Black). ✔Type: 4mm Banana Jack to Banana Jack 4mm Banana Plug Adapter.