The cores of wires are made of 100% pure-copper, which are much better than ordinary Copper-Clad-Steel telephone cord; contacts of plugs are coated with thicker gold plate. Both ensure great connection and calls. According to the shape, we have Round Telephone Cable and Telephone Flat Cable as well as Slim Telephone Cable. According to the cores quantity, we have 4 Core Telephone Cable and 6 Cores Telephone Cable and 8 Cores Telephone Cable. If you need more infromation, please feel free to contact us anytime.