Nemtek strain insulators are used at the beginning or at the end of an electric fence wire run. The strain insulator - porcelain is suitable for fence wire diameters up to 3.0 mm and a working load of 150 kgs.The strain insulator - porcelain is ideal in areas where fires can occur and for long fence runs where high tensioning of the electric fence wires is required. These insulators are made of porcelain and can withstand high temperatures for a prolonged period of time. They are available in white.