Install this urethane-plated swivel caster with brake on dollies, store fixtures, and other equipment that needs to be moved on a regular basis. With a load rating of 600 pounds, this caster's wheel has a six-inch diameter and a width of 1 1/2 inches, making it perfect for installing on heavier items. The mounting plate for this caster is 4 x 4 1/2 inches, for use with 3/8-inch mounting bolts. For use with replacement wheel 4-6-919.