Marathon Universal Flat Free Wheelbarrow Wheel Universal fit polyurethane flat free wheelbarrow tire comes with a 3 In. hub and 5/8 in. bearings as well as a parts kit that includes 4 1/2 in. spacers, 2 1 In. spacers and 2 3/4 In. ball bearings allowing it to fit virtually every wheelbarrow. Easy-to-install with a minimal amount of tools required. Easy-to-read installation instructions on back of package. Tire fits 2-wheel wheelbarrows, lawnmower trailers, and garden carts. Replaces the following tire sizes 4.80/4.00 x 8 In., 4.00 x 6 In., 4.00 x 8 In., and 3.50/2.50 x 8 In. Tire Type Flat Free, Overall Diameter 14.5 In., Tire Size 320 In., Wheel Diameter 8 In., Tread Ribbed, Weight Capacity 300 Lbs., Pkg Qty 1, Package Type Box