Nylon Tread Wheel 900 lb Load Rating 300 to 999 lb Load Rating Range 3 3/8 in Wheel Dia 3 in Wheel Width Nylon Wheel/Tread Material Hard 80-85 Shore D Precision Ball Standard Tread Shape 1/2 in For Axle Size Not Included Includes Spanner Bushing Nylon Wheel Core Material Yes Non-Marking 2 7/8 in Hub Length