1Fitment: Fits most hot rods and classics engine. Replacement for Olds; Replacement for Ford; Replacement for Mopar; Replacement for Chrysler, etc. 2Strong Protection: The boot cover helps prevent spark plug boots from burning, hardening and cracking, improving the performance of the engine, and expanding the life of the wires and plugs. 3Fiberglass Material: The spark plug boot protector is made of fiberglass, and the double layer structure, high temperature resistant, heat insulation to increase durability. 4Easy to Install: Spark plug boot guard is simple to use, just wear (sewing to the end of the spark plug) to get the maximum protection, and prevent heating from 1,000 Fahrenheit (550 Celsius). 5Quantity: The kit includes 8pcs sark plug heat protector is used for boot and wire, can protect your expensive plug wire set's performance and increases their life using.