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