Need help with custom brake line

Sorry for the large picture, but the detail is important.

I have a 2015 Golf TDI. I need to have a custom rear braided SS line made. I have GTI PP rear brakes I know the banjo is 12mm. I need the line to be 2" longer.

I need to know what the specs on the female end are. I'm pretty sure it's M10x1.0 But I don't know what the flare inside is. I've attached a chart and eliminated the ones it can't be.

I'm pretty sure it's a standard VW female rear brake line fitting.
I guess I should be asking what the standard is?

Looks like it's. DIN/ISO Bubble Flare
If the end of the tubing looks like a button, and the back side angle of the flare is 90 degrees, than it is the DIN flare. You must use a nut with a "lead" for the DIN flare.

It's fun solving your own problem. I've got it narrowed down to these two.

Thread from the dead but anybody, or OP, have the answer to this. I'm looking to have some lines made up this week for the same project as the OP.