It doesn't have a hex head on it. It had a male slot end on it (best description I could come up with). Pretend that you have a flat head screwdriver that you need to turn, you would use a flat head screw which would grip each side of the driver. That is what it the tool looks like. Dumb.

If I had a mill and some round stock I could make one...'cept i've got no mill...dang.