Q-Tubes 700c x 28-32mm 48mm PRESTA Valve Tube 129gQ-Tubes presta valve tubes.Item SpecificationsWeight129gValvePrestaISO Diameter622 / road / 29"ISO Width30,31,32,28,29mmLabeled Size700c x 28-32mmValve LengthMed 41-55mmTube CompoundButylValve CoreRemovableValve ShaftThreadedFeatures of Q-Tubes 700c x 28-32mm 48mm PRESTA Valve Tube 129g 700c x 28-32..