Master Peter Brusso made this self defense weapon in 2004 to test the concept out. Shown to lots of military, spec ops specialists, and other enthusiasts alike, it made the cut so that design is now in our major offering of self defense tools. But this was the first one! It will come with a certificate of authenticity that will be emailed to you so you can print it out; of course, that is once you purchase this piece of history. First come first serve!