DC Power Converter Plug, HTTX (5.5mm x 2.1mm to 3.5mm x 1.35mm) Tip Size AC/DC Adapter Barrel Plug Connector for Wall Chargers (10-Pack) Female connector: accepts 5.5mm x 2.1mm barrel plug; Male connector: accepts 3.5mm x 1.35mm barrel plug Recommended for DC 3volt to 24volt, Max load 3amp or less Overall Dimension : 40 x 12 mm / 1.6" x 0.47" (L*Max.D);Material : Plastic, Metal Brand new and High quality What You Get: 10 x DC Power Converter Plug, our worry-free 18-month warranty and friendly customer service.