Shape of the base? quality? Whether it is not good, air leaks at the moment of connecting with the valve, while zero pressure is applied while working hard. What happened! I regret that it should not be subject to warranty for more than one year since purchase and should have tried to use it as soon as possible.
I did not mesh with the bike's air valve at all, and carefully pull all the tire air out during work. There seems to be someone who does not fit with a fitting person, but who bought it for a bicycle or a ball is not safe · · ·. I entered in Panasonic's hand-caught style that is nothing to be desired. Sorry!