ITEM NAME:DC Hollow Plug 2.1mm X 5.5mm Plug Adapter Coupling Hollow Socket Mains Plug Description: Great item for small electronics projects and CCTV applications. Connector Size - 5.5mm x 2.1mm - External Diameter x Internal Diameter. Female Socket DC Adapter, solder termination with solder bucket and tag. Perfect for making a cable to a desired length or replacing a broken connector. Package Includes: 1x DC Power Plug. SKU: DMO0015599251007494.1x DC Power Plug. People always bought together with. SKU: DMO0015599251007494.