Proflow's ignition lead wire sets feature high-temperature silicone outer jackets and insulation, along with a fiberglass braid for more pull strength. These wires are available in custom-fit or universal sets. The custom-fit wires have both terminal ends installed; while the universal sets have the spark plug boots installed—and come with the distributor boot terminals. A variety of terminal ends and spark plug boot ends are available. Order the ignition wires recommended for your vehicle application.