Polyurethane Tread on Iron Core Wheel, 3,950 lb Load Rating, 3,000 to 5,999 lb Load Rating Range, 8 in Wheel Dia., 3 in Wheel Width, Polyurethane Wheel/Tread Material, Firm, 92-97 Shore A, Tapered Roller, Standard Tread Shape, 1 in For Axle Size, Not Included Includes Spanner Bushing, Iron Wheel Core Material, Yes Non-Marking, 3 1/2 in Hub Length