I know, but all these years I just use the flat gauges. Not sure why the wire ones are desirable really, but if I can get the higher gauges that way, I'm good with that I guess. Not excited about it since I use feeler gauges to gap metal when I am making stuff, etc. and the flat ones are more universal. But I have searched and can't seem to find the set I am looking for.
Starrett makes a combination wire (for plugs) and flat set but I couldn't figure out what wire gauges were available. More research is needed, but I wanted to see what you all do.