➤These heavy duty set of 4 caster 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 casters has a load capacity of a 900 lb. (3600 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" | Metal Roller Bearings with Metal Sleeve Insert | Plastic Washer Included ➤TOTAL LOCK BRAKE: This simple and easy to use brake allows you to lock both the wheel and the swivel to keep your caster completely stationary. This brake option is the perfect solution for those seeking two brakes in one. RIGID: This is a rigid caster is the excellent choice in applications where linear mobility is required. These casters meant to easily move forwards or backwards, or straight lines. ➤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 6 inch Pro-Tech Polyurethane Maroon on a Non-Marking Polypropylene Core Wheel Casters, come in a 4-pack which includes: 2 Total Lock Brake Caster and 2 Rigid 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 casters has a load capacity of a 900 lb. (3600 per Pack) - 4 Per pack. ➤These casters are durable and are able to withstand extreme temperatures, lowest -30°F to 180°F. ➤The caster swivels 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 against most chemicals, oils, grease, and water in a multitude of industrial applications including mobile storage racks, mobile tool chests, platform carts, warehouse trucks, food industry, and other material 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" | Metal Roller Bearings with Metal Sleeve Insert | 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.