I'm pulling out a Lockheed brake master cylinder from my car...well lets say that's what I'm trying to do! I have steel brake tubings that are terminated with some brass nuts that srew into the master ....now those are really tight and nothing metric or SAE seem to give a good grip on them...I've put a good shot of penetrating
oil and will let it soak overnight...But are they any special size spanner for those?
Any good tricks to avoid the typical destroyed all rounded-off unusuable left over of a nut pityfull sight?
thank you.