Yueton&reg; 20pcs 10inch 2.1 X 5.5mm Male and Female Dc Power Adapter for CCTV Security Camera Lead Plug Pigtail Cable Center positive 2.1mm DC plug. Outside diameter: 5.5mm. Anti-rust alloy docking port. Pigtail cable with 18pcs of 0.13mm no oxygen copper wires.Tin plated end. Adopt anti exposure and ageing resistance polyvinyl chloride plastic. Male and Female DC Power Connectors each 10pcs,total 20pcs.