Valley Enterprises 6' Male to Male 2.1mm x 5.5mm Plug DC Power Adapter Cable 20GA Male to Male 2.1mm x 5.5mm DC Power Adapter Cable Both ends of the cable are the same size - 2.1mm x 5.5mm Male Wire Size: 20GA Maximum Voltage: 36V Total Length: 6 feet (+/- .25 inch), total length measured connector tip to connector tip