Originally Posted by sleeve
The rigid portion of the stock line is 1/2" ID, the flex portion is about the same.
When you buy hard line, steel, copper-nickel, stainless... they'll be listed by the Outside Diameter.
~1/2" ID is probably going to be 5/8" OD.

I think copper coiled tube is listed by the ID and has a larger OD... that's confusing, Not at all recommending you use copper.

•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
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