Product description Conductor material: high-quality oxygen-free copper Specification: 28AWG Insulation material: PP Outer cover material: environmentally friendly PVC Wire outer diameter: 2.4*4.8MM Color: white Cable length: 1m Package content: 1*phone jumper 1.High QualityRJ11 telephone white/grey extension cord is made from high-quality material for long use 2.Wide ApplicationThis telephone cords for landline phone comes with two RJ11 standard phone connectors on both ends and 1 inline coupler, which can be used for telephones, fax machines, modems, answering machines, etc 3.This extension cord can be used from wall phone line to a telephone. Male RJ11 to male RJ11 telephone cables are used for standard RJ11 phones.For use with telephones, fax machines, modems, answering machines, etc.Not work as a Ethernet Cable (Example: internet box to xbox). 4.Ensure Great ConnectionThe cores of wires are made of pure-copper, 28WAG, much better than ordinary Copper-Clad-Steel telephone cord; contacts of plugs are coated with thicker gold plate. Both ensure great connection and calls. 5.Apply toThe telephone wire is good for long-distance communication for your desk phone or office phone .Extended length phone line cord is provided extra length for working in the office or at home.