Firestone Farm Tractor Implement Tire Inner Tube TR 15 Rubber Valve 15" 16" sizes Fits 6.50-15/16 6.70-15/16 7.00-15/16 7.60-15/16 8-16 Farm Tractor Implement Tire Inner Tube Fits both 15" and 16" sizes listed For Bias as well as radial applications