.2 1/2 in, Wheel Width 1 1/2 in, Wheel/Tread Material Nylon, Wheel Core Material Nylon, Non-Marking Yes, Number of Wheels 1, Caster Brake Type No Brake Included, Tread Shape Standard Swivel, Low-Profile Standard Plate Caster, Load Rating 550 lb, Swivel Lock Type No Lock Included, Wheel Dia.