Non-highway inner tube 4.00-in x 6.00-in for 6-in rim. Infused with leak-stopper, and seals holes up to 1/8-in. Tire sealant formulation finds and seals leaks. Prevents future leaks. Can extend life of older tires. Installs just like a standard inner tube. Provides up to 2-years of protection. Straight valve stem