HEX

HEX-nut that is
in the near future, I predict you will all be searching for the 1" stainless steel version

well... here ya go, they're about $2.70 per (and about $6 shipping)
http://www.boltdepot.com/Product-Details.aspx?product=4069
&
Heh, yep: Bolt Depot is a thing :)

Some of you readers may be familiar with Gioavanni Liverra's work
(*look for and snatch up any copies of "Confessions of an Italian Magician" you may find)
or perhaps you have Green Magic 5 (go dust off those VHS tapes)

This trick is about to be real popular.

Thank me later

or... just assume I'm
nuts