Presta valves are skinny (6mm in diameter) needle-like inner tube valves you’ll find on pretty much all highway bikes and more expensive mountain bikes. The Schrader is the normal valve you find on automobile tires and several bicycle inner tubes. Some pumps, for example this Silca Gravelero, attribute reversible chuck https://mysocialport.com/story5198006/helping-the-others-realize-the-advantages-of-prestashop-plugins