Columbia River Knife and Tool TPENT Elishewitz Tao Pen Tactical Pen
http://www.amazon.com/gp/product/B0074FGPG2?tag=sukses2015-20
Precision titanium design
Pointed butt of pen may be used to thrust or provide a disabling pressure point
Pen point may be thrust for penetration in soft tissue
Pen made of 6061 aluminum precision machined and hard anodized
Fully functional writing instruments use the Fisher Space Pen ball point cartridge which is pressurized design developed for NASA
