I bought 3 of them, wire tied together.
Ken Tool, 1 1/2 inches. Weight is about a pound each.
So, I went to the Ken Tool online catalog and found them on page 30.
They are called "Cap Nut Wrench", and used to take off the inside dually of truck tires, that 18 wheelers use.
The short video explained it all.
I guess I will keep one to use "If I ever need one".
Anything that big, I would use my 3/4 inch ratchet and socket, or an impact wrench.
I wonder what other application these wrenches could be used for?