Marathon Flat Free Quick-Seal Replacement Inner Tube - 13x6.50-6"/15x6.50-6" - Pre-filled with Flat Free Tire Sealant

Flat Free Quick-Seal Tubes, Replacement Inner Tube Prefilled with Flat Free Tire Sealant, 13x6.50-6"/15x6.50-6" Tube, No.45013. Flat Free Quick Seal Tubes are a hassle-free way to repair a flat tire. Quick-Seal Tubes are unlike your average replacement inner tube because they come pre-filled with Flat Free Tire Sealant. The sealant's synthetic fibers, adhesion agents and corrosion.