Krowne Metal 28-101S 3" Swivel Casters with BrakesIf your equipment needs a heavy duty set of casters, then look no further. These Krowne Metal 28 101S Casters have been designed for heavy duty use. They are grease resistant and have brakes attached. They fit most manufacturer's equipment, making them versatile to your needs. They have universal 4" x 4" plates and raise the equipment 4" once added. These 28 101S come in a set of 4 per box and each set has the capacity to hold a 220 pound load.