Polyurethane Tread on Iron Core Wheel, 1,230 lb Load Rating, 1,000 to 2,999 lb Load Rating Range, 6 in Wheel Dia., 2 in Wheel Width, Polyurethane Wheel/Tread Material, Firm, 92 Shore A, Roller, Standard Tread Shape, 1/2 in For Axle Size, Not Included...