45 degree flaring tool

[jeffandre]

My cheap old tool is useless for stainless brake line! I need to upgrade but will only use the tool for one car, so would like to avoid spending big bucks if possible. I have the 45 degree stainless fittings already, and need to know what tools are the best for my needs. Also, do I need to double flare the stainless, or do you just single flare it? Thanks in advance,