E.R. Wagner CSRT-K245-01 5" Diameter Polyurethane Tread/Aluminum Hub Wheel Heavy Duty Swivel Total Lock Plate Caster, 1050 lbs Capacity Range Roller Wheel Bearing Mounting Dimensions 2 5/8" x 3 5/8" to 3" x 3" Overall Height 6 1/2" Load Rating 1050 LBS Caster Finish Yellow Zinc