Conductor: each Conductor Consist of a Round Wire of Annealed High Conductivity Copper, Smoothly Drawn with Uniform Diameter and Resistance. insulation: each Conductor is Insulated with Either Solid Medium/ High Density Polyethylene or Foam Skin Polyethylene Insulation. the Conductor are Insulated in Various Colours with Extremely Tight Tolerances in Order to Meet By Cable the Electrical and Transmission Characteristics.