Sutong China Tires Resources TU6001 HI-RUN Heavy Duty Lawn and Garden Tube, 4.80/4-8 Tr87 (Discontinued by Manufacturer) Lawn and garden inner tube Fits 3.50/4.00/4.80-8, 4.80/4.00-8, 5.70/5.00-8 and 3.50/4.00-8 Tr87 valve stem 4.80/4.00-8-Inch Inner Tube