Steel Tread Wheel, 7,000 lb Load Rating, 6,000 lb and Greater Load Rating Range, 8 in Wheel Dia., 3 in Wheel Width, Steel Wheel/Tread Material, Extra Hard, 179 BHN, Precision Ball, Standard Tread Shape, 3/4 in For Axle Size, Not Included Includes Spanner Bushing, Steel Wheel Core Material, Yes Non-Marking, 3 1/4 in Hub Length