GadKo Phone / Data RJ11 Crimp Connectors for Stranded Wire, 6P4C, 50 Pieces GadKo is the only authorized dealer of GadKo branded products. RJ11 plugs are a type of plug typically used for carrying telephone signals. 6P4C means that the contacts on these plugs have 6 positions in which are placed 4 gold plated contacts; a standard for RJ11 jacks. These plugs are also designed for use with stranded wire. These come in a bag of 50.