I have both but with the Tyre deflator for the red one is too slow and you can you use it for fast checking the black one for the first time if felt confused but after your explanation it's too easy the trick is to open the inside valve which makes the difference.. you think it's open but it's not make sure that you open it full not little
@@hitchupadventures4302 thanks for the response! I guess what I mean is: when you insert the gauge into the valve stem, do you cover the other side of the gauge?
