The Platinum Exhaust Insulating wrap utilizes an exclusive hybrid construction featuring Thermal Conduction Technology (TCT). The proprietary Weave Lock design provides durability and minimizes fraying. Made using volcanic rock which is naturally resistant to heat. Helps reduce underhood temperatures, can withstand direct heat up to 1200 degree F and can add horsepower to your engine. Sold in 1 or 2 inch wide, 50 foot rolls. Details: 50 foot x 1 inch Platinum Proprietary Weave Lock Design provides durability and minimizes fraying Made using volcanic rock which is naturally resistant to heat Helps reduce underhood temperatures Can withstand direct heat up to 1200 degree F and can add horsepower to your engine.