These heavy-duty casters come in a 6-inch 2-pack and feature a rigid design. Made from high-quality cast iron with galvanized steel wheels and yokes, these casters are durable and have strong abrasion resistance and shock absorption. With a load-bearing capacity of 1250lbs per caster wheel, they can handle heavy loads easily. The casters are easy to use, with two ball bearings that rotate freely and are suitable for various applications such as pallet trucks, inventory carts, and workbenches. They are designed to be quiet during use and come with efficient customer service for any inquiries or issues.