Polyurethane Tread on Iron Core Wheel 3 500 lb Load Rating 3 000 to 5 999 lb Load Rating Range 12 in Wheel Dia 3 in Wheel Width Polyurethane Wheel/Tread Material Firm 92 Shore A Roller Standard Tread Shape 1 1/4 in For Axle Size Not Included Includes Spanner Bushing Iron Wheel Core Material Yes Non-Marking 3 1/2 in Hub Length