Replacement Inner Wheel Tube Tractor Tire Sealant Outdoor Lawn Equipment.  Infused with leak stopper.  Seals punctures instantly up to 1/8" diameter.  Prevents future leaks.  Straight valve stem.  Effective to -25 degrees F.  Universal for 8" rims:  20x8.00-8, 18x8.50-8 aand 20x9.50-8.  Condition is new but some of the boxes have seen better days with no harm to product.