This is a bundle of four MKS Stainless Steel Commercial Door Hinges, each with four bolts. These heavy-duty hinges are designed to withstand commercial use and are made from high-quality stainless steel for durability. The hinges can be used on doors and other hardware that require a sturdy hinge. The hinges are suitable for use in both residential and commercial settings, and they are easy to install. The hinges are also rust-resistant and will stay looking new for a long time. Whether you're replacing old hinges or installing new ones, this bundle of MKS Stainless Steel Commercial Door Hinges is a great choice.