Caster Wheel 4 960 lb Load Rating 3 000 to 5 999 lb Load Rating Range 8 in Wheel Dia 3 in Wheel Width Polyurethane Wheel/Tread Material Hard 70 Shore D Precision Ball Standard Tread Shape 3/4 in For Axle Size Included Includes Spanner Bushing Aluminum Wheel Core Material Yes Non-Marking 3 1/2 in Hub Length