The product is a quantity of 25 1/2"-13 finished hex nuts made from steel Grade 2. These nuts are zinc plated and feature a coarse thread style with 13 threads per inch. They are designed for external hex drive style with a height of 7/16 inches. The nuts are manufactured in the United States by stelfast inc, known for their quality fastener products. Ideal for various industrial and commercial applications, these nuts provide a reliable and durable fastening solution.