I got tired of unscrewing my airbrushes all the time to switch between my three brushes. I initially planned on getting a splitter and three more hoses but then I realized I would have a jumble of hoses all over the place and that it would cost about $50 for the lot! This solution only cost me less than a third of the splitter and hoses and it's really easy to use, and I don't have hoses all over the place.
As mentioned, this is easy to use; I just screwed on the quick release male adapters onto each of the airbrushes and screwed on the female quick release socket on o the hose. No trouble with seals or threading just a quick setup and go.
I used them now a few times and it is simple and efficient to switch back and forth between brushs so I am pretty happy. In fact, I can do the uncouple and recouple action between brushes with one hand, which is great because it frees my other hand to stabilize the brush if there is paint in the coup.
So far the performance is good; no detectable air leaks and the fit is pretty solid. The parts screw on and off well with no cross-threading and I didn't need any sealant tape to maintain air pressure in the fittings.
I'm very happy with this purchase and would recommend it for anyone with two or more airbrushes and a tight budget.