➤Each heavy-duty caster has a load capacity of 750 lb. (3000 per Pack) - 4 Per Pack. ➤The Top Plate Overall Size is: 4" x 4-1/2" | Bolt Hole Spacing: 2-5/8" x 3-5/8" slotted to 3" x 3" | Attaching Bolt Size: 3/8" | Roller Bearings Included with Metal Sleeve | Plastic Washer Included ➤Our casters are completely sealed ball bearings for smooth swiveling and the best protection against dust and debris. ➤IconCasterWheels 5 inch Pro-Tech Polyurethane RED on a Non-Marking Polypropylene Core Wheel Casters, come in a 4-pack which includes: 4 Swivel Casters. ➤3 Year Company Backed Warranty for all ICONCASTERWHEELS Product. We stand behind our products. We offer a 3-year warranty for all of our products. To view, all our products follow ICONCASTERWHEELS. ➤IconCasterWheels 5 inch Pro-Tech Polyurethane RED on a Non-Marking Polypropylene Core Wheel Casters, come in a 4-pack which includes: 4 Swivel Top Casters. ➤These heavy-duty industrial casters set of 4 wheels make it easier to move heavy industrial equipment with ease as its high load capacity rolls smoothly in the toughest environment or surfaces. ➤Each heavy-duty caster has a load capacity of 750 lb. (3000 per Pack) - 4 Per Pack. ➤These casters are durable and are able to withstand extreme temperatures, lowest -30°F to 180°F. ➤The caster swivel's radius is 360-degrees. ➤Our casters are completely sealed ball bearings for smooth swiveling and the best protection against dust and debris. ➤The kingpin-less swivel raceway distributes impact better than standard kingpin casters, enabling smooth swiveling and extending service life. loads. ➤Our state-of-the-art casters are made to resist most chemicals, oils, grease, and water in a multitude of industrial applications including mobile storage racks, mobile tool chests, platform carts, warehouse trucks, the food industry, and other materials handling applications. ➤The axle nut for these casters are 1/2" diameter, with Double ball bearings with hardened raceway for extra strength. ➤The Top Plate Overall Size is: 4" x 4-1/2" | Bolt Hole Spacing: 2-5/8" x 3-5/8" slotted to 3" x 3" | Attaching Bolt Size: 3/8" | Roller Bearings Included with Metal Sleeve | Plastic Washer Included ➤ROLLER BEARINGS: This caster comes with roller bearings with spanner bushing for greater shock resistance and increased capacity. Roller bearings allow a caster to perform better during impact loading and shock.