Polyurethane Tread on Iron Core Wheel 2 640 lb Load Rating 1 000 to 2 999 lb Load Rating Range 10 in Wheel Dia 1 3/4 in Wheel Width Polyurethane Wheel/Tread Material Firm 92-97 Shore A Precision Ball Standard Tread Shape 5/8 in For Axle Size Not Included Includes Spanner Bushing Iron Wheel Core Material Yes Non-Marking 2 1/4 in Hub Length