To inflate a Presta valve, you just unscrew the valve stem anti-clockwise and afterwards attach a pump. At the time the desired air force has actually been achieved, eliminate the pump and screw the valve stem clockwise to be sure it is actually airtight. Quickly skip YouTube video clip sponsors. https://bookmarkeasier.com/story19591124/how-much-you-need-to-expect-you-ll-pay-for-a-good-presta-addons