Brake line flaring tool?

   / Brake line flaring tool? #62  
Lisle makes a nice double flare tool, I use it quite often to make brake lines.
 
   / Brake line flaring tool? #64  
I couldn't find the answer to this anywhere. So, is NiCop (brand) tubing 90/10 or 70/30? 90/10 is the cheaper and weakest of the two.
 

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