Evertech 20 Pcs 5.5 mm x 2.1 mm DC Male End Jack Power Cable With Lead End Pigtail for CCTV Security Camera DC Jack tip: 5.5 mm (outside dimension) x 2.1 mm (inside dimension) Pigtail Cable Length: 12 cm (5") Ideal for Video Surveillance Camera Installations Simply & Professional appearance for cabling Power Jack Connector for Caxial Wire