Tubo Road tubes are the Tubolito's for the road: Ready for disc brakes and rim brakes. Compared to standard rubber tubes youll save almost 70g of rotating weight per wheel. The puncture protection is equally outstanding: Tubo-Road is 2X more resistant to punctures than a standard tube.Item Specifications: Labeled Size, 700 x 18-28, Weight, 38g, Shaft Type, Smooth, ISO Width (mm), 18mm,19mm,20mm,21mm,22mm,23mm,24mm,25mm,26mm,27mm,28mm, Tube Compound, Thermoplastic Elastomer, ISO Diameter, 622 / Road / 29", Valve, Presta Med 41-55mm,.