The Presta valve has an interior entire body, a valve cap, and an outer stem. What's more, it incorporates a lock nut which utilizes to safe the stem to your wheel rim. The air pumping process of this valve is a little bit challenging due to the smaller valve diameter. https://allbookmarking.com/story19836411/how-much-you-need-to-expect-you-ll-pay-for-a-good-presta-addons