BBB Inner tube 20 x 1.75-2.125 Presta Valve

The BBB Inner tube 20 x 1.75-2.125 Presta Valve is made of durable long-lasting butyl rubber compound. Seamless to prevent the inner tubes from leaking air and keep air pressure for a long time. Air chamber wall-thickness of 0.87mm. Thick enough for extra puncture resistance and thin enough to spare you the extra weight.