Caster Wheel with Swivel Plate. Rubber Wheel has 3 Inch Diameter By 7/8 Inch Wide Wheel. Swivel Plate is 2 Inch-by-1.75 inch plate with 1.56 Inch by 1.25 Inch Bolt Pattern.150-Pound capacity per Caster. Rubber tire is molded onto a hard Plastic hub. Contact Customer Service For Additional Information and Bulk Pricing.