shonco 2 pack 6m 20ft phone telephone extension cord cable line wire with standard rj11 6p4c plugs for landline telephone- white shonco <b>product structure:</b><br><p> * conductor: copper<br> * wire diameter: 0.4 copper(single)<br> * size: 6 meters (plus or minus two percent)<br> * line core: 4 root<br> * insulation: hdpe<br> * wire shield: pvc<br><p> <b>product features:</b><br><p> single insulated wire according to the different pitch twisted pair, and with specified color combinations to identify line, reduce the mutual interference between the clues crosstalk, power consumption is small.<br><p> <b>scope of application:</b><br><p> telecommunication engineering wiring, links between indoor telephone communication cable system wiring, voice communication system between the main line, program-controlled switches, phone, fax and digital television.<br>