Polyurethane Tread on Iron Core Wheel 960 lb Load Rating 300 to 999 lb Load Rating Range 6 in Wheel Dia 2 in Wheel Width Polyurethane Wheel/Tread Material Firm 90 Shore A Precision Ball Standard Tread Shape 1/2 in For Axle Size Not Included Includes Spanner Bushing Iron Wheel Core Material Yes Non-Marking 2 1/4 in Hub Length