With a load rating of 900 pounds, this caster's wheel has a six-inch diameter and a width of two inches, making it perfect for medium-duty usage. The mounting plate for this caster is 4 x 4 1/2 inches, for use with 3/8-inch mounting bolts. Install this urethane-plated swivel caster with brake on dollies, store fixtures, and other equipment that needs to be moved on a regular basis. For use with replacement wheel 5-6-929.