Continental standard weight presta valve tubes.Weight: 135gValve: Presta Med 41-55mmISO Diameter 622 / Road / 29"ISO Width: 25, 26, 27, 28, 29, 30, 31, 32Labeled Size: 700 x 25-32Tube Compound: ButylValve Core: RemovableShaft Type: ThreadedSeamless and...