Introducing heavy-duty steel casters designed for handling trucks, material transition carts, trolleys, platform trucks, and more. With high-quality mixed steel and strong cast iron hub, galvanized steel wheels, and zinc-plated yoke, these casters are durable, rust-resistant, and have a load capacity of up to 5200lbs. The swivel function rotates 360 degrees smoothly and quietly, making it suitable for a variety of surfaces. These casters are perfect for heavy-duty jobs and provide long-lasting performance.