... .2mm,nickel plated white plastic,3.5mm 4 pole dc audio plug Product advantages: 1.Materials: copper rod (59%), POM ... -supply, DC plug, DC jack, RCA jack, MiNi pin, RCA connecting plugs, MiNi USB plugs, earphone sockets, RCA sockets, AC connecting ... plugs, Big-size Din, USB sockets, MiNi female mould, power-supply connecting plugs, audio plugs, video plugs, transferring plugs, switching plugs ...