Rigid, Standard Plate Caster, Load Rating 275 lb, Swivel Lock Type No Lock Included, Wheel Dia. 4 in, Wheel Width 1 1/4 in, Wheel/Tread Material Elastomer, Wheel Core Material Polypropylene, Non-Marking Yes, Number of Wheels 1, Caster Brake Type No Brake Included, Tread Shape Standard