Features: Black-finished titanium construction. Click-top opener. Deep-carry pocket clip. Pocket clip removal tool and split ring. Compatible with Hi-Tec C Slims, D1 Style refills, and Fisher Space Pen Universal cartridges. Description: The Mini Click Pen from Big Idea Design is a low-key addition to your EDC collection! It fits just perfectly in all sorts of pockets-pants pockets, shirt pockets, that pocket on the inside of your suit jacket. If you just need a minimalist Pen for daily life, this is the one! Precision machined in China and designed in Tennessee! Looking for a pen with more teeth? We carry a wide variety of self-defense Tactical Pens!