Presta valves are skinny (6mm in diameter) needle-like internal tube valves you’ll obtain on basically all road bikes and more expensive mountain bikes. The Schrader is the normal valve you discover on automobile tires and plenty of bicycle internal tubes. Some pumps, like this Silca Gravelero, function reversible chuck heads. https://bookmarkprobe.com/story19998310/5-essential-elements-for-prestashop-plugins