When I re did my rear brakes I bought the flare nuts on amazon. Two sizes I that case but they are all 4.5mm 3/16 lines. The stock seemed to use 10 and 12 mm thread with 7/16 and 5/8 (11mm didn’t fit) but the replacements used metric nut sizes. Not sure about the size for the line right from master however but you can take the stripped part to a hardware store to thread into their thread utility.

You said “you can flare yourself “ do you have iso bubble flare? They are not single or double flares and you can’t buy iso flare tool in stores best I’ve been able to tell. Can’t even rent.


Sent from my iPhone using Tapatalk Pro

__________________
2011 E70 • N55 (me)
2012 E70 • N63 (wife)