Optix 5 Pair P.RA Male and Female 2.1 x 5.5mm DC Power Plug Jack Adapter Connecter Socket Plug Content: 5x DC Male Connector & 5x DC Female Connector DC Power Jack Connector Adapter For 5050 3528 Single Color LED Strip Light Male Plug Size: 2.1 mm X 5.5 mm Female Plug Size: 2.1 mm X 5.5 mm Applications : CCTV Camera, LED Light Strips