Presta valves are skinny (6mm in diameter) needle-like internal tube valves you’ll come across on pretty much all street bikes and more expensive mountain bikes. The Schrader is the standard valve you find on car or truck tires and several bicycle interior tubes. You could put in a Presta valve https://bookmarkspiral.com/story19756193/not-known-factual-statements-about-addon-prestashop