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. | Made of copper material, much better than normal Iron or Copper-clad-Steel telephone cord. Standard RJ-11 6P4C plugs at both ends. | The cores of wires are made of pure-copper, 100% 26WAG, much better than ordinary Copper-Clad-Steel telephone cord; contacts of plugs are coated with thicker gold plate. Both ensure great connection and calls. | With 20 adhesive cable clip holders, help those cluttered cables and cords around your desk much nicer, cleaner, and safer. | High-Quality phone line cord extension allows you to place your phone 25 Feet away from the telephone wall jack, the plugs are coated with thicker gold plate than normal ones, ensure great connection and calls.