[dirtyjim]

and your nice metal line can fatigue over time and snap at the fitting burning the truck to the ground. its rare, just like your truck burning from a rubber hose failing.
just spend $20 on a fire extinguisher that should already be in every vehicle you own and put what ever hose you want on your truck.

I use hardline on mine, easy to bend and easy to flare when you have a nice eastwood turret flaring tool like I have