I am redoing my clutch line from hard line by the tranny mount to the slave. so far what i have is
10mmx1.0 to -3 fitting into slave
15" of -3 Stainless steel braided brake line

I cant find anything to convert the 12mmx1.0 brake line to -3.
I was thinking about cutting the flare off and putting a 10mmx.10 but on the line but cant find the nuts.

anyone know where i can find a 10mm flare nuts? or have another solution?

 

since this was such a PITA for me and too me over 2 days of googling to find a solution, I am sharing this so others will know.
I found this company called BreakQuip. they make a M12x1.1 female to M10x1.0 male inverted flare brake line adapter. The model number is BQ44. they dont sell on their website but if you find a dealer they should have it. Once my order comes in and I get everything together I will post up some pics and let everyone know how it works out.

http://www.brakequip.com/mfthread.html