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Title: Iffy
Review: Works with some valves but the tolerances are on the limit. It has to be screwed onto the presta valve first (taking care not to inadvertently tighten up the valve locknut) and then attached to the pump/inflator nozzle - pushing all the way on. On one bike, the rear could be inflated this way but the front refused - it appears the inflator was not pushing far enough on the valve to open it and enable compressed air to enter.With all this fiddling, it's possible to use this adaptor but it worked out easier and quicker just to change the heads round on the floor pump.
