We love dual-purpose items. Whether it's a station wagon that has all-wheel drive so it functions moderately well off-the-beaten-track or a multi-purpose tool with pliers, scissors and screwdrivers, having one device that performs more than one function helps minimize bulk while maximizing benefit.
In this case, it's the Smith & Wesson Tactical Pen. Constructed from 6061 hard-anodized aluminum and featuring a screw cap for positive engagement (meaning it won't come loose in your pocket and leak ink everywhere, don't ask us how we know that...), the Tactical Pen is an unobtrusive yet potent self-defense option. Best of all, it uses standard Parker or Hauser ink cartridges, so it can fulfill its penly duties (I think I just made that word up...) for years to come.
So, if you're looking for a sturdy, defense-oriented tool that also happens to make a fine writing implement, the Smith & Wesson Tactical Pen is worth consideration. It's sturdy, feels good in the hand and holds up to years of use.