Trans American GR16/KR16 Inner Tube with TR13 Valve Stem Quality GR/KR combination inner tube. Fits tire sizes 5.50-16, 6.00-16, 6.50-16, 6.70-16, 7.00-16, and 7.50-16. For use in bias and radial tires. Perfect for farm, trailer, truck applications. See product description for radial size applications.