These Green Swivel Casters are an ideal solution for your heavy-duty load transportation needs. Made of steel with a polyurethane mold, these casters have a load capacity of 700 pounds per unit and can hold up to 1400 pounds in total. With a 2-inch wheel width and a 4-inch wheel diameter, these casters are built to last and come with roller bearings and a hardened raceway for extra strength. These casters have a plate mount and come in a pack of 2 with a top plate size of 4"x4-1/2" and mounting over heights of 5-5/8". Additionally, the swivel feature allows for 360-degree rotation, providing easy maneuverability. These casters come with a 90-day hassle-free return policy and a 100% satisfaction guarantee, making them a reliable choice for your heavy-duty transportation needs.