Taylor Cable Blue Thundervolt 50 Ignition Wire Sets generate maximum firepower and ensure enhanced vehicle performance. These .409 inch, 10.4mm diameter ignition wire sets feature a 50 ohm ferrite spiral wound coated core of blended copper-nickel alloy bonded by a conductive acrylic latex wrap providing optimum radio frequency interference and suppression of electromagnetic interference. They include a 100% zimplex® silicone outer casing that is resistant to 600 degrees Fahrenheit. These units generate 102,000 volts dielectric current and include low profile 100% silicone vibration proof double spring locking spark plug terminals. They are easy to install.