Flat-Free Polyurethane Foam Wheel, 300 lb Load Rating, Sawtooth Tread, 10 5/16 in Wheel Dia., 1 3/4 in Wheel Width, For Axle Size 3/4 in, 4.10/3.50-4, Standard Tire Rim Type, Center Mount Hub Position, 3 1/2 in Hub Length, Steel Hub Material, Yes...