I am sorry to tell you that I gave up on it due to the wholesale price of the tubes
I don't feel right charging almost 7 dollars for a piece of plastic.
I can certainly ask for a few "replacements" if you are in dire need.
I hear that. I doubt many people need them, but yeah, I could definitely use one (or a few if you can get them). This metal tube from my terminator doesn't quite fit right and I'd love to be able to see my liquid level