With what appears to be no more than a standard cheap pen in your shirt pocket, you can now have a devastating last-ditch self-defense implement that you can take most anywhere with you.

The Ventilator is constructed from ultra-stiff hollow carbon fiber tubing, and has a penetrating point that is protected and concealed by a standard pen cap with a pocket clip.  The opposite end is covered with a slightly tacky material to enhance the grip.  

Carbon fiber is a high-tec material which is completely non-metallic, extremely strong, rigid, and way lighter than fiberglass.  It's used in advanced aircraft, boats, sports equipment, etc. where performance is everything and cost is secondary.  

Length: 6".  Weight: 0.2 oz.  Color:  all black.