Do your brake line spanners look like these?Any hints on how to undo the brake lines? Tried a brake line spanner: didn't move the nut, but did a nice job of starting the rounding off process.
If I use vice grips, and destroy everything in the process, I take it I'm in 'please bend me some new brake lines' territory. Maybe I should just go there and get on with it...
I use them for Citroen hydraulics - don't seem to round the corners of the nut (as long as I choose the right size ).