Brake line flaring tool that actually double flares steel line?

I know of several garages that use the eastwood type, I believe that MATCO carries a similar modle. You're spoiled for life if you use one, and you'll never want to use anything else afterwards.
Absolutely. I've used those cheaper style flaring tools and the tube always seems to move within the clamps, the flares often are crooked too. The only drawback to this bench vise mounted unit is that it does not work in a portable fashion like trying to flare a line still on a car. Eastwood does offer one that allows for that but I've just been so happy with this unit, I have yet to need anything else. It was not cheap but it has been great. You often forget about the extra cost when a tool or part simply works and never fails.