This Dual Eyelet Swivel Kit is made of 316 Stainless Steel and has a size of 7/16 inches in diameter and 5 inches in length. It contains one swivel and two quick links. The system of measurement is in inches, making it easy to specify and measure the size of the swivel. This high-quality hardware is perfect for those in the business and industrial field who need a reliable and durable solution for their fastening needs. Safe Working Load of 770 Lbs for the swivel and 5000 for the quick links. One inch inside Diameter M12