For those who don't need or care for an overbuilt tactical pen, yet want a strong defense implement, the Nitecore NPT10 is an excellent alternative. It features a 1.8mm thick CNC milled titanium alloy body with a pocket clip and tungsten glass breaker tip. Outfitted with a Fisher Space Pen cartridge, the NPT10 is a smooth performer on paper. The pen cap fits over the tungsten breaker tip when used for writing. As a real bonus to an excellent pen, Nitecore ships the NPT10 in a matte finished aluminum pen case capsule with an o-ring sealed, threaded cap.