Conwork 10-Pack DC Socket Female Barrel Jack 5.5mm x 2.5mm Solder On DIY Custom Power Plug Adapter Great item for small electronics projects and CCTV applications. Connector Size - 5.5mm x 2.5mm - External Diameter x Internal Diameter Female Socket DC Adapter, solder termination with solder bucket and tag Perfect for making a cable to a desired length or replacing a broken connector. Package Contents: 10 x 5.5mm x 2.5mm DC Socket Female. Lifetime Warranty.