So I'm one that's always got to know the why's, how's, what's, etc. It's the writer in me, and when I saw the words metal hose, naturally I was curious. I mean, what in the world, a hose made of metal? And I found out they can be used to move gases and fluids. Hmm. I wonder, gases I can see easily being used for this type of hose, but would the fluids cause rusting in the hoses? What do you think?