ITEM NAME:5Pcs 5.5x2.1mm male DC In-Line plug socket jack connector adapteME 5Pcs 5.5x2.1mm male DC In-Line plug socket jack connector adapter Specifications: DC Power Female Jack Connector Material: Plastic+Alloy Color: Black, Silver Tone Outside Diameter: 5.5mm/0.22" Inside Diameter: 2.5mm/0.098" Male Plug Length: 9mm/0.35" Note: Please allow 1-3mm error due to manual measurement..DC Power Female Jack Connector. Male Plug Length: 9mm/0.35". Material: Plastic+Alloy.