Areyourshop 10 Pcs 5.5mm x 2.5mm CCTV Camera DC Power Male Jack Connectors 2.5 x 5.5mm CCTV Camera DC Power Plug Connector. DC Power Plug with plastic construction and strain relief. Screw terminal strip for connecting power wires. Plug Outside Diameter: 5.5mm Plug Inside diameter: 2.5mm