No flats joes road racing sealantthe worlds most effective anti puncture sealant for road bikesspecifically engineered to seal punctures at high air pressures of road racing wheels for use in road tubular tubeless tires and inner tubes instantly seals punctures in the tread up to 3mm easy to use spout fits into all valves contains micro sealing particles featuresrecommended amount for 1 road bike wheel tubular tubeless or innertube50 60 ml per wheel for effective puncture resistance