Iron Tread Wheel, 1,000 lb Load Rating, 1,000 to 2,999 lb Load Rating Range, 4 in Wheel Dia., 2 in Wheel Width, Iron Wheel/Tread Material, Extra Hard, 180-220 BHN, Precision Ball, Standard Tread Shape, 1/2 in For Axle Size, Not Included Includes Spanner Bushing, Plastic Wheel Core Material, Yes Non-Marking, 2 1/4 in Hub Length