These polyolefin swivel casters come in a pack of four, with a load capacity of 3200 pounds. Featuring roller bearings with hardened raceways, 2" wheel width, 6" wheel diameter, and a top plate measuring 4"x4-1/2" that can be mounted over heights of 7-1/2". The casters can rotate 360 degrees and include brakes for safety, while providing superior floor protection and quiet operation.