Wheelbarrows & Carts To Fit 18x7.00-8 18x7.50-8 18x8.50-8 18x9.50-8 18x11.00-8 18x8.50-8 Inner Tube Garden & Patio,18x11.00-8 18x8.50-8 Inner Tube To Fit 18x7.00-8 18x7.50-8 18x8.50-8 18x9.50-8,Double thickness tube valve joint, INNER TUBE WILL FIT:18x7,00-8 - 18x7,50-8 - 18x8,50-8 - 18x9,50-8 - 18x11,00-8, Ride on Mower inner tube with a, straight rubber valve TR13, These inner tubes are common for small ride on lawn mowers and Garden trailers.18x8.50-8 18x9.50-8 18x11.00-8 18x8.50-8 Inner Tube To Fit 18x7.00-8 18x7.50-8.