Black Menba&reg;2.1x5.5mm 5 x Male + 5 x Female DC Power Cable Jack Adapter Connector Plug & 2 x DC Male Power Plug Pigtail Cable for 12V Led Strip Camera CCTV Video everything fits tightly on the individual units You can use these coupled connectors for any type of modular connection involving two wires Easier for 12-24V led light, CCTV camera installation, provide more securer cable connection