The Heavy-Duty Casters are made of high-quality steel and zinc, with galvanized wheels and strong cast iron hubs. They have a wide range of uses, including pallet jacks, handling trucks, and furniture. The caster wheels have a strong load-bearing capacity and are designed for indoor and outdoor use. With a 360-degree swivel and smooth, quiet rotation, they are easy to install and replace. These heavy-duty casters are an indispensable item for any family, with a long service life.