E-outstanding 4PCS 4mm Banana Socket Female to Female Adapter Coupler Connector Extension Insulated Banana Plug Connectors Black Red

Insulation material: PVC. Contact material: nickel-plated brass. Rated voltage: CATII 600V. Rated current 19A. Color: red, black. Length: 42mm. The package includes: 2x red insulated banana connectors. 2x black insulated banana connectors. Feature: PVC insulation shell, non-slip design. Fine workmanship. Easy to use. Both ends can accept all standard 4mm banana plugs. (With cover, without cover and retractable plug) Connect the two 4mm banana plugs firmly together.