Swivel, NSF-Listed Sanitary Plate Caster, Load Rating 275 lb, Swivel Lock Type Total Lock, Wheel Dia. 4 in, Wheel Width 1 1/4 in, Wheel/Tread Material Polypropylene, Wheel Core Material Plastic, Non-Marking Yes, Number of Wheels 1, Caster Brake Type Total Lock Brake, Tread Shape Standard