Swivel, Standard Plate Caster, Load Rating 750 lb, Swivel Lock Type 4-Position Directional Lock, Wheel Dia. 4 in, Wheel Width 2 in, Wheel/Tread Material Polyurethane, Wheel Core Material Cast Iron, Non-Marking Yes, Number of Wheels 1, Caster Brake Type Swivel Lock with Side Pedal Brake, Tread Shape Standard