Iron-Masters Collar

Hi there,

Does anyone here know where I would be able to purchase the Iron-Masters collar ?
The only link I found is to a site (Dungeon Enterprises) which is under construction
I would love to get my hands on those

I did a search using iron-masters collars in quotations and found a few references and basically saying they are no longer made since one of the partners died and the other gave it up.

-Dorson