100% Brand new, never been used Color: Red Length:6"(15.5cm) ID:1"(22mm) Temperatures Protection: Non-flammable, protect spark plug boots and spark plug wires from Excessive Engine and Exhaust Heat. Material: 8pcs spark plug boot protector, made From Double Wall Braided Fiberglass Sleeving (Triple Wall At Sewn End), offer great durability, fits All Spark Plug Boots And Wires Up To 2500 Degrees Fahrenhett (1371° C). Easy Installation: Just Slip On (Sewn End Over Spark Plug ) For Maximum Protection, Spark plug boot heat socks Can Withstand Heat Up To 2500 Degrees. Each Boot is 6inch Length,Boots Will Work With 90 Degree, 45 Degree, And Straight Spark Plug Boots. Sleeves Are Halogen Free& Non Conductive, Sleeves Resist Gasoline& All Engine Chemicals. Other Features: The Spark Plug Wire Sleeves Can Rest Directly On Hot Headers And Other Engine Components Without Burning, Melting Or Becoming Brittle. Professional installation is highly recommend.(No Instruction Included)