Presta valve cycling tubes
Presta
— a relatively new type of nipple, found mainly in high-end road cameras. It has a diameter of about 6 mm and a little more length than the "car" Schrader (see the relevant paragraph). The valve protrudes noticeably outward and is prone to breakage, so in many nipples of this type it is made replaceable.Note that pumps for Presta can also be used with Dunlop nipples (see the relevant paragraph), but it is not recommended to do the opposite due to the mentioned fragility of the valve in Presta nipples.