Saw one of these stuff on a YT short, and since I was buying other stuff, I bought this one as well. Easy to set up, it has pretty much everything what needed. One thing you have to have is a step drill, or a 22mm-ish drill for the main hole. Rinsing out soda flask is really takes 2-3 second and it wastes tenth of the water, so it is really good for some water saving.