Rigid, NSF-Listed Sanitary Plate Caster, Load Rating 300 lb, Swivel Lock Type No Lock Included, Wheel Dia. 4 in, Wheel Width 1 1/2 in, Wheel/Tread Material Polyolefin, Wheel Core Material Plastic, Non-Marking Yes, Number of Wheels 1, Caster Brake Type No Brake Included, Tread Shape Standard