Phenolic Tread Wheel 500 lb Load Rating 300 to 999 lb Load Rating Range 6 in Wheel Dia 1 1/2 in Wheel Width Phenolic Wheel/Tread Material Hard 85 Shore D Roller Standard Tread Shape 3/8 in For Axle Size Not Included Includes Spanner Bushing Plastic Wheel Core Material Yes Non-Marking 2 1/8 in Hub Length