Polyurethane Tread on Iron Core Wheel 1 100 lb Load Rating 1 000 to 2 999 lb Load Rating Range 3 15/16 in Wheel Dia 2 in Wheel Width Polyurethane Wheel/Tread Material Firm 92 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 11/32 in Hub Length