Premium ignition wires are designed for superior performance and durability. A spiral-wound Kevlar® core suppresses RFI (radio-frequency interference) and features 500 ohm per foot resistance for excellent performance. Around the core is a fiberglass braid which provides superior pull strength. The outer jacket is composed of premium high-density silicone rated at 450° F and features a quality gloss finish to resist damage from water and chemicals. Sets are available in multiple colors and boot angles, and they include male and female boots with appropriate terminal ends to fit any ignition set-up.