Trans American 25x8-12 / 25x9-12 / 25x10-12 Inner Tube with TR6 Straight Metal Valve Stem Quality Trans American 25x8/9/10-12 inner tube. TR6 straight metal threaded valve stem for ATV/UTV applications. Fits Sizes: 24X8-12 24X10-12 25x28-12, 25x9-12, 25x10-12 26X9-12