The product is a case of 32 oz. of Emergency Diesel Treatment by Penray, designed to thaw frozen fuel and prevent future freeze-ups. This pack of 12 units is manufactured in the United States and includes a manufacturer part number 202132. The product does not come with a warranty and is sold as a single unit. Ideal for use in cold weather conditions, this diesel treatment helps to ensure smooth operation of diesel engines by preventing fuel from freezing.