This Performa-plated swivel caster, with its 375-pound load rating, is perfect to install on equipment that needs to be moved frequently. This swivel caster has a six-inch diameter, 1 1/2-inch wide wheel, and can be installed using 3/8-inch mounting bolts on its 4 x 4 1/2 mounting plate. When needed, use replacement wheel 4-6-449 for repairs.