The product is a 3 pack of Hart & Cooley R-4.2 F204 12″ diameter pipe sleeves, designed for industrial plumbing and fixtures. These tubular pipe insulation sleeves are made of fiberglass material, providing flexibility for easy installation. Suitable for use in air conditioning, water tanks, and refrigeration systems, these round pipe sleeves are 5 feet in length and manufactured in the United States by the trusted brand Hart & Cooley. The pack includes three insulation sleeves, ensuring coverage for various piping needs.