It IS hose. The OP picture is from the Angelo Vespi/ DSE Camaro. I had some of the same hose on my car (DSE worked on my car too). I shortened a piece of it...it is cloth braiding over a lightly convoluted inner plastic liner. Just cuts with a sharp scissor. In my case it has A/N style 2 piece fittings. It is easy to work with...much more than SS braided hose.
I like it with the shrink tube for cable cover. Slick...
This is a pic of the hose used for my fuel tank breather.
Summit has it with a blue or red tracer. Not sure where to get it with the gold tracer. I wonder if DSE would divulge?
I hope that helps.
Bill