Using an ultra-low resistance spiral wound Ni-Chrome alloy conductor and high temp silicone boots, these wires were created to deliver the best in performance and long-term reliability. Dragon Fire spark plug wires are a great alternative to factory OEM plug wires or cheap imitation performance wires. Specially designed as a direct replacement for your worn factory plug wires. The Dragon Fire Spark Plug wires feature a super low 150 ohm/ft resistance conductor that's protected in a highly durable inner and outer silicone sleeve. They also feature a high dielectric strength copolymer compound coating to help eliminate voltage leaks and Radio/Electromagnetic Frequency Interference (RFI/EMI). The high voltage terminals are protected by extra thick silicone boots to ensure optimal spark delivery and long service life. Heat Rated to 600° F. See Specifications for the exact resistance rating per foot.