This product is a perfect fit for your 18×6.50-8, 18×7.50-8 Tire / Wheel: Also a replacement tube for 18×6.50-8, 18×7.50-8, 18×8.50-8, 18×9.50-8, 20×8.00-8, 20×8.50-8, 20×9.00-8 and 20×10.00-8 Heavy Duty Material Built to Last Longer: This Inner Tube is made from High Quality Butyl Rubber. These inner tubes are highly durable and ideal for home, professional and commercial / industrial use in tire application Compatible with: It works with lawn mowers / tractors, hand trucks, wheelbarrows, garden / utility / flat carts, yard trailers, dollies, trolleys, wagons, generators, snow blowers, pressure washers, air compressors, wood chippers and more Tube / Valve Type: ATV, Lawn & Garden, Go Kart Replacement Tire Applications with a Valve Type: TR13 for Rim Size: 8 Inch Get this aftermarket tube with the best price and quality in the market. If you get a flat tire just replace the tube and you’ll be back up and running This is a pair of two (2) new Air-Loc 18×6.50-8, 18×7.50-8