Unless you are contemplating the prebuilt systems, you need either worm gear clamps or petit er clamps and the oetiker clamp pliers. Too obvious, maybe but the connections need to be made. I would also opt for barrel swivels and male threaded QDC's rather than barbed fittings. (I like to be able to easily break it all down for cleaning and sanitizing.). Finally I use nylon gaskets in the barrel swivels to minimize leaks.