Top Street Performance Custom BBC 454 8.5mm Spark Plug Wires 180 Ceramic Boots SpecificationsWIRE DIAMETER8.5mmCONDUCTOR STYLESpiral Wound Kevlar® CoreRESISTANCE500 ohms (Ω)/ftRFI SUPPRESSIONYesWIRE JACKETINGHigh-density SiliconeSPARK PLUG BOOTBlack 180° CeramicWIRE ENDFemaleWIRE COLORBlackQUANTITYFull Set of 8 Plug Wires and 1 Coil WireOverviewNever have burnt or melted spark plug boots again. This set of TSP wires comes equipped with premium ceramic boots, capable of withstanding temperatures up to 2,000° F. The wire itself has a jacket composed of premium, high-density silicone rated at 500° F and features a quality gloss finish to resist damage from water and chemicals. 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. This set is pre-cut and assembled for Chevy small block engines.