It looks great when it is unpacked with all accessories (tips) stored in a small box cleverly attached to the pipe. Stable but no more, inflation is no problem up to 4 bar. After this limit, the inflation is more difficult and we must squarely put its full weight to lower the piston. Beyond the 5 bar, it is almost impossible. Unfortunately, some wheels require a pressure at least equivalent (my wheel scooter must eg. Swell at a pressure between 5.5 and 6 bar ..) Even standing balanced and hopping all my weight, my 65 kg n 'fail to cause the piston!). The other problem that made me make this inflator, the Schrader fitting that screws. After (attempted) inflation, unscrew the tip leaving fuiter air (much most of the time, not least after a little testing evil). This has no effect for a big wheel, it's a catastrophe for a small wheel (scooter) as this corresponds to almost 1/4 or 1/3 of all air contained in the wheel. The solution: a quick connect fitting, so that suddenly we can withdraw without having to unscrew it. This is found on foot pumps ... which is operated "by hand" (like Shadocks), much cheaper (probably because of the gauge, maybe less accurate?) and blithely operate easily up to more than 8 bars ... So a pump adapted to the inflation "big wheels" requiring pressure "reasonable" and for which my bill will probably be a bit too harsh.
