Columbia River Knife and Tool TPENAOD Elishewitz Tao Pen Tactical Pen Made of the highest quality materials Can be used at three levels of defensive force, depending on the threat Impact crown on cap for striking an assailant on head or hands Sharp pen point may be thrust into soft areas as a line of final defense Pointed pen butt can thrust or provide disabling pressure on impact points Impact crown on the cap can be used to strike 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