I'm not trying to dispute what you are saying. If and when I get the Paasche, if I need an adapter I will get it. Or I will get the complete Paasche hose. Or I may decide to get the complete kit. But the inlet on my AB looks to be the same as the one on the Paasche in the photos. I have the adapter that is shown on the plastic bag that says Paasche. The hose I got fits on the compressor end, but on the AB inlet I had to install that adapter for it to fit. The inlet on my AB was much smaller than the inlet end of the hose. The adapter came with the hose. I assume it was designed to fit both types of AB inlets. The thread pitch may be different and maybe that's what you are referring to. I have a little experience with air lines/fittings and adapters, but you probably know more about these AB's than I do so I will just wait and see when/if I get the Paasche if it will work. If not, no problem, I'll get the Paasche adapter or hose. I did see a carded version of the H that comes with a hose and bottle and is only a few dollars more than the AB alone. Maybe that would be the way to go. I appreciate your time and effort in explaining this to me.