Presta valves are skinny (6mm in diameter) needle-like internal tube valves you’ll locate on basically all road bikes and dearer mountain bikes. The Schrader is the normal valve you find on auto tires and plenty of bicycle inner tubes. The mountain bicycle rim is thicker and stronger, but I nevertheless https://bookmarkstime.com/story20309835/facts-about-prestashop-live-chat-support-revealed