The product is a set of 5 Simpson Strong-Tie HUCQ610-SDS Heavy Joist Hangers, each measuring 12 inches in length and made of steel. They are galvanized for durability and feature a rail height of 1 1/2 inches. Additionally, the package includes 2 1/2" screws for easy installation. These heavy joist hangers are designed for supporting joists and beams in various construction projects, providing a reliable and strong fastening solution.