TOOGOO(R) DC Power 5.5mm x 2.1mm Female to 3.5mm x 1.35mm Male Converter Plug Product Name : DC Power Connector; Connector Type : 5.5x2.1mm Female Jack to 3.5x1.35mm Male Plug Overall Dimension : 40 x 12 mm / 1.6" x 0.47" (L*Max.D); Material : Plastic, Metal Color : Black, Silver Tone