Presta valves are skinny (6mm in diameter) needle-like interior tube valves you’ll obtain on practically all street bikes and costlier mountain bikes. The Schrader is the standard valve you discover on car tires and several bicycle interior tubes. Some pumps, for instance this Silca Gravelero, attribute reversible chuck heads. - https://bookmarkinglog.com/story19740572/the-basic-principles-of-prestashop-live-chat-support