Full kits are available so no guessing. Tips aren't included but just about any 510 tip works fine. As a bonus, the kits come with a thingy.
No joke. That's what it's called.
It's quite possibly the most ingenious, simplest priming tool ever devised.
I keep seeing people say that about the thingy but HOW exactly does it prime the carto?
My next tank is probably going to be from them so if there is a priming shortcut I would love to know it.