Phenolic Tread Wheel 800 lb Load Rating 300 to 999 lb Load Rating Range 4 in Wheel Dia 2 in Wheel Width Phenolic Wheel/Tread Material Hard 85 Shore D Precision Ball Standard Tread Shape 1/2 in For Axle Size Not Included Includes Spanner Bushing Phenolic Wheel Core Material Yes Non-Marking 2 7/16 in Hub Length