Plate Size: 3-3/4" X 4-3/8"Wheel Size: 8" Air Filled TireOverall 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