RWM Casters 2-65 Series Plate Caster, Swivel, Dual Wheel, Kingpinless, Urethane on Polypropylene Wheel, Roller Bearing, 1600 lbs Capacity, 6" Wheel Dia, 1-1/2" Wheel Width, 7-3/4" Mount Height, 4-1/2" Plate Length, 4" Plate Width