The MICHELIN inner tube remains to this day the best quality available on the market, it is thicker than other ranges, and is more resistant to the most extreme stresses. MICHELIN MICHELIN 18/19 CD RET Airstop inner tube with oblique outlet valve. Suitable for tire 13x45 730x130 4.75x18 5.25x18 4.75x19 11x45 12x45 720x120