E.R. Wagner Plate Caster, Swivel, Polyurethane on Polyolefin Wheel, Stainless Steel Plate, Delrin Bearing, 275 lbs Capacity, 4" Wheel Dia, 1-1/4" Wheel Width, 5-1/16" Mount Height, 3-5/8" Plate Length, 2-3/8" Plate Width