Quote Originally Posted by Whilhelm View Post
you mean 1/2" OD 3/4" ID right? Its a common size and would give you a slightly higher flow rate then using a smaller size.
No, I ment what I said.
3/8 ID and 4/8 OD.
There is no such tube as 1/2 OD and 3/4 ID, thats impossible.

Edit: And the question has nothing to do with flow, only what looks better.