Always be prepared with this stylish and compact key chain pen. Constructed of high-strength TC4 (the highest grade) Titanium, this pen features a window breaker on the tip and a loop for easy attachment to a key ring. The titanium construction creates a high strength to weight and gives the pen incredible anti-corrosive qualities. Plus, you feel cool saying the word titanium. You access a smooth writing ballpoint pen by unscrewing the tip of the key chain. The pen's body has grooves engraved into it, allowing for a firm grip even when wet. The window punch is highly effective against the tempered glass (safety glass) found in automobiles. When closed, the key chain measures 3 inches (7cm), and when converted into a pen, it measures 4.5 (10cm) inches with a diameter of .25 inches.The pen includes a metal key ring and two spare black ink refills. *** I've only made a small batch of these, therefore they will not have UPC Codes.***