Nylon wire looms are an economical way to keep your LiveWires spark plug wires separated and neatly routed. These non-conductive looms are made from 6-6 Dupont Zytel nylon and will not fade stain corrode or discolor. Extremely durable as they will not crack or break due to the heat and cold. Resistant to fluids such as gasoline coolant brake fluid and solvents. These separators have an inside diameter of 10mm and are a perfect fit around the protective sleeving on our LiveWires. {specs}.