Finally a pump I can trust. Small, unfussy, functional. Thus, the hose is screwed onto the valve the pressure can be built up optimally. Have the pump mainly for Auto / Schrader valve in use. It works lt. Description for Presta / Presta valves. I would like to say that I could easily inflate a tire with Dunlop valve, no idea why that is not in the product description. The Punpe has the optimum ratio of size and pumping volume. On the supplied bracket on the bottle holder I would, however, be a good piece a minute alone.