Spark Plug Wire Boot Cover High Heat Exhaust Thermo Wrap Shield Protection Barrier BLACK SOLD & WARRANTY BY ASTRA DEPOT. Package includes: 8 X Spark plug boot protector Universal Design fits most Straight or Angled Spark Plug Boots and Wires. Work as a Radiant Heat Barrier or can be placed Directly on Heat Source. Protect Plug Wires and Boots from Excessive Engine and Exhaust Heat. Double-Layer High Temperature Fiberglass. Withstand 1200F Direct Continuous Heat Non-Flammable. Protect against Chemicals & Resist Water. Help Prevent Burn-Through, Hardening and Cracking of boots. Keep your Wires and Boots Cooler in a High Temperature Environment Universal fit for vehicles such as ultimate race cars, street vehicles, to motor homes