Trans American 13.6-26 14.9-26 13.6-28 14.9-28 Inner Tube with TR218A Valve Stem Tractor / Implement inner tube for tire sizes 13.6-26, 14.9-26 13.6-28, and 14.9-28. For use in radial sizes 13.6R26, 14.9R26, 13.6R28 and 14.9R28. TR218A valve stem for air and liquid fill options. For use in radial and bias tires.