Steel Tread Wheel 12 000 lb Load Rating 6 000 lb and Greater Load Rating Range 6 in Wheel Dia 3 in Wheel Width Steel Wheel/Tread Material Extra Hard 179 BHN Tapered Roller Standard Tread Shape 1 1/4 in For Axle Size Not Included Includes Spanner Bushing Steel Wheel Core Material Yes Non-Marking 3 1/4 in Hub Length