Replace The Tires On Your Lawn Mower, Tractor, Golf Cart, Garden Trailer, And 20x8.00-8" TO 20X10.00-8" INNER TUBES WITH TR13 STRAIGHT VALVE STEM - Fits vehicles with an 8-inch rim diameter and a tire width that is between 8 inches to 10 inches. Check your tire's sidewall. If it indicates that your tire size is 20x8.00-8", 20x10.00-8", 19x7-8", 18x6.50/7.50/8.50/9.50-8", then these 2-pack inner tubes are a perfect fit for your tires. UNIVERSAL FIT INNER TUBES WITH TR-3 STRAIGHT VALVE STEM - These inner tubes are compatible with riding lawn mowers, tractors, golf carts, garden trailers, tillers, snowblowers, and ATVs. The TR-3 straight valve stem is the standard for universal inner tubes for lawn mowers and other utility inner tubes. HEAVY DUTY 20X8.00-8 INNER TUBE ITS RATED MAXIMUM PSI IS 30 (20-30psi). EASY NO-TOOL INSTALLATION - In a rush? You definitely don't have a lot of time to waste even on a regular day. Thankfully, installing these replacement inner tubes would only take less than 5 minutes of your time. You'll be back working in your garden or field in no time. SAFETY FIRST IS OUR MOTTO: Heavy-duty inner tube and tire. When and if punctured, it immediately creates an airtight seal to prevent damage, destruction and injury to the rider. Safe in any season or weather condition.