> > drive the nut by applying force to the flat of the nut
> > and not to the corners as in a conventional design thus
> I'm pretty convinced that these are wrenches with a pivoting part. I'm
> not going to try to draw a picture: The main body of the wrench (the
> part you hold with your hand) is a piece of bar stock, with an angled
> end (say about 30 degrees from vertical) and a hole for a pivot pin.
> The flat of the angled end is what actually hits the flat of the nut.
Whether or not this is what he was talking about, there is no reason
that a "real" wrench that works on the flats couldn't be built. The
inside of the thing would look something like this:
/ ____ \
I don't know if this would work any better on a rounded nut than a
conventional wrench, but it certainly would have less tendency to round