Flat-Free Polyurethane Foam Wheel, 325 lb Load Rating, Turf Tread, 13 3/16 in Wheel Dia., 4 1/2 in Wheel Width, For Axle Size 3/4 in, 13x5.00-6, Standard Tire Rim Type, Center Mount Hub Position, 3 in Hub Length, Steel Hub Material, Yes Non-Marking