XtremepowerUS 15" Flat-free Tubeless Wheelbarrow Cart Wagon Non Flat Ribbed Tire 5/8" Bore Made of Polyurethane Foam, Tubeless Tire Size: 15 in. x 3.50-8 Tire Type: Flat free Bore Diameter: 5/8" Bearings Included (THIS WHEEL TIRE IS NOT FOR HIGHWAY)