Tactical Pens are a tool designed with multiple functions. First and foremost Tactical Pens are designed from durable aircraft grade aluminium and for the purpose of self defence. The tactical pen is designed in the same size and design as a standard pen so it can be used as a writing implement especially useful for outdoor purposes and times when a ultra strong pen is needed. Tactical Pens will usually also have a hard specially designed tip which could be used to break a car window in the event of an accident or as a tool for chipping or digging at hard surfaces.
As a defence tool the principles behind a tactical pen are simple.You have an easy to carry concealable everyday object in your pocket that in the event of an attack can be used to deter or disable your attacker. The pens are not designed as an attack too only a blunt object that can inflict shock and pain in the event of an attack.
If you need to use a tactical pen always remember the purpose of using the pen in the first place is for self defence and not to harm or seriously injure. A tactical pen is most effective when your attacker is hit in the arms or shoulders rendering the arms useless or also equally effective if strikes can be made to the side of the body under the arms.
Alway remember it is a tool to help you in the event of an attack and if you can alway walk away or run from danger. If you can stun or shock your attacker during an attack take advantage of this time to escape and run for help.
There are many tactical pens on the market and most will do the the same job so in many cases it will just be a matter of personal choice or taste as to which tactical pen you choose.