Pit stop road racing inflates a 21 28 tubular up to 65 bar enough to get home and increase pressure with a pump and a tyre from 0 to 6 bar permanently repairs punctures in tubularstyres thanks to the special pure latex foam contained in the mixture latex in fact vulcanises with the compound and permanently seals the puncture offers 3 months of prevention 3 months is the time taken by latex to dry in the inner tube during this period latex acts as a preventive anti puncture liquid un