CHITRONIC 10-Pack [5.5x2.1mm] Male & Female DC Power Cable Connector Pigtail Plug Adapter for CCTV Camera, DVD, DV, Laptop, Speaker, Monitor Power Source 5.5x2.1mm Size perfect for CCTV security camera system and other common devices. Lenght: 5.2 inches (male or female cable) Come with 10 pcs male connectors and 10 pcs female connectors