OdiySurveil(TM) 10PCS 10 inch(30cm) 2.1 x 5.5mm DC Power Male Plug Pigtail for CCTV Security Camera Product Name :DC Power Pigtail wire,with OdiySurveil package and high quality; Center positive 2.1mm DC plug; Outside diameter: 5.5mm; Length: 10 inches, Easy installation; Male Pigtail Connector,as universal usage, RED wire for DC+,BLACK wire for DC-.