Major 17" 18' 700-17 7.00-17 700-18 7.00-18 750-17 7.50-17 750-18 7.50-18 Truck Tire Inner Tube Metal Valve Heavy Duty Multi Size Tube 17" 18" Rim Size Fits 700-17 750-17 700-18 750-18 700R17 750R17 700R18 750R18 Radial and Bias Applications