CRKT Elishewitz Tactical Pen TPENT is a stylish writing instrument that is designed with all of the fine qualities you would expect in a nice pen, but it's also more than that. A former Recon Marine with decades-long martial arts training and an immersion into the Far Eastern cultures, custom knifemaker Allen Elishewitz designed these CRKT tactical pens. The Columbia River Elishewitz Titanium Tactical Pen is a clean, futuristic interpretation of one of mankind's basic tools, much the same as Allen does with his many successful knife designs. The tactical pen is a high-tech writing instrument that can be used as a self-defense enforcer if need be. Made of super-tough titanium and hard-coat color anodized, the pen offers lasting durability and toughness. The heavy cap is threaded so that it will not pull off in use, and it is castellated for greater impact. The flutes, grooves and body tapers on the pen, combined with the pewter-toned stainless steel pocket clip, provide a secure grip. With some basic instruction or knowledge, Columbia River Knife & Tool allows you to readily use the pen against an assailant or attacker to inflict notice, pain, or injury, thwarting an otherwise potentially defenseless act. Despite all that, the Columbia River Knife & Tool Elishewitz Threaded Self-Defense Pen makes for a great writing instrument as well.