This polyurethane-plated, rigid caster has a load rating of 750 pounds. Its wheel is five inches in diameter and two inches wide. Install this rigid caster firmly with 3/8-inch mounting bolts with its mounting plate of 4 x 4 1/2 inches, with outside bolt hole spacing 2 5/8 x 3 5/8 inches. When needed, use replacement wheel 5-5-929.