Rigid, Single-Flange Track-Wheel Plate Caster, Load Rating 3000 lb, Swivel Lock Type No Lock Included, Wheel Dia. 8 in, Wheel Width 3 in, Wheel/Tread Material Iron, Wheel Core Material Cast Iron, Non-Marking Yes, Number of Wheels 1, Caster Brake Type No Brake Included, Tread Shape Single Flange