【Precise Fit, Wide Equipment Coverage】Tailored for 13x5.00-6 size, perfectly compatible with 7 common sizes including 12X5.00-6, 5.30-6, 145/70-6,5.00-6", 4.00-6",4.50-6", and 5.30/4.50-6" size tires，universal for 6" rims.fits Razor Dirt Quad (Versions 1-18,Go-Karts, John Deere 100/200 Series Lawn Mowers, and compatible with most brands of ATVs, snow blowers, yard tractors, wheelbarrows, no extra adaptation needed, saving time and effort. 【High-Quality Natural Rubber, Flexible & Durable】Made of high-purity natural rubber, excellent flexibility and not easy to crack or deform; good wear-resistant and anti-aging properties, capable of withstanding wear in common outdoor scenarios such as grass and gravel roads, meeting daily high-frequency use needs, service life far exceeding ordinary low-quality inner tubes, with OEM-grade quality assurance. 【Standard TR13 Straight Valve, Easy Inflation & Air-Tight】Equipped with TR13 standard straight valve stem, complying with industry universal standards for strong compatibility with inflation tools; reinforced valve root design prevents twisting and breaking during installation, excellent air tightness, passed factory inflation test, eliminating slow air leakage and no frequent inflation needed for daily use. 【Natural Shock Absorption & All-Temperature Adaptation】Natural rubber has inherent excellent elastic shock absorption performance, effectively buffering bumps during driving, smoother operation, reducing equipment wear and human fatigue; no brittleness at -10℃ and no bulging at 50℃, adapting to different climates in north and south, stable use all year round whether for snow operations in northern regions or outdoor construction in southern areas. 【One-Stop Installation Tools, Easy to Use】Each set includes 1 valve core wrench + 3 spare valve cores + 2 sealed valve caps, no need to purchase additional tools for installation and maintenance, easy to operate even for beginners, quickly complete replacement. Please check the model and size of your old tires before buying. If you have any questions, please contact us and we will respond to your questions within 24 hours. Note: This inner tube is NHS (Not for highway use)