MORELIGHT 10 Packs DC Power Female Plug Jack 2.1 x 5.5mm Adapter Connector Socket For CCTV LED Strip 5050 3528 These 5.5mm x 2.1mm female DC jack power connector plugs can be used for LED lighting, CCTV, and various electronics. This barrel connector is the most common connector used for 12V and 24V DC power. Simply loosen screws, insert wire, and twist the screws shut using a screwdriver. No electrical tape, no splicing, and no crimping required. Package Includes: 10x Screw-on Female DC Power Jack Add a 5.5x2.1mm DC connector to any wire. This is the most commonly used barrel jack size for 12V and 24V DC power. Easy screw-on installation, clean appearance. No splicing, soldering, or crimping. Only tool needed is a small screwdriver. Great for LED lighting, CCTV, electronics, and more.