This set of (4) 2" x 1/2" hex head bolt cap screws from CYI is made of high-quality steel, ensuring durability and reliability in any fastening application. The bolts feature a grade of 307A, making them strong enough to withstand heavy loads and high stress conditions. These bolts are ideal for use in the industrial and commercial sectors, including construction, automotive, and machinery industries. With a drive style of hex, you can easily tighten or loosen them with a wrench, and the head style of hex head ensures a secure grip. Made in the United States, these bolt cap screw sets are a great choice for any fastening needs.