AIR LOC GT Inner Tube with Tr13 Rubber Valve Stem 12 Inch Combination Size Fits 24x12.00-12, 24x1200-12 26x12.00-12 26 120012 Lawn and Garden Designed for Industrial/ Garden Tractor Fits Sizes: 24X12-12 24x12.00-12, 26x12.00-12, 24x10.50-12 Tube has Standard TR13 valve stem: Straight rubber valve, the most common stem style, measuring approx. 1.38