Plate Size: 3-7/8" X 4-1/2"Wheel Size: 8" Air Filled Tire Overall Height: 10"Material: Rubber WheelLoad Capacity: 220 lbs.Gives Mobility To Heavy Loads On Smooth Hard Surfaces And Finished Concrete Floors For The Protection Of Both Loads And FloorsUse In Water, Carpet, Ceramic, Concrete Or Wood