The Nail! This is a titanium Pry-Spike that Zeke and I have been designing in the background. Zeke is an avid cyclist, and he wanted a self-defense spike that he could easily slip onto a pocket with minimal interference. The Nail weighs in at 2.5 oz and is 5.5" long, it goes right into a pocket, and it is the perfect size for prying tasks as well as fitting nicely into the palm of your hand for self-defense. Each nail also comes with a FIIK bundle