SWI Parts T4 Fiberglass Turbo Shield Turbo Blanket High Temperature (Black) custom fit for easy install high quality and durability. can hold up to 2000 degree F made of fiberglass that can hold 2000 degree F. -stainless steel knitted wire mesh inner liner. -stainless steel capstan rivets stainless steel lacing wire fastening system. -comes with 2 springs fastener surfaced with high quality silicone impregnated fiber glass material for extra heat, wearing, and corrosion resistance