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, gray Cable length: 1m, 2m, 5m Package content: 1*phone jumper 1. High Quality - RJ11 telephone white/grey extension cord is made from high-quality material for long use 2. Wide Application - This 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. Great extender - 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 Connection - The 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 to - The 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.