Zero Tolerance 0010BLK; 5.3&rdquo; Tactical Pen in Black with 3-D Machined Aircraft Aluminum Body, Glass Breaker Tip, Custom-Machined Clip, O-Ring Sealed Snap Cap, Rite in The Rain Ink Cartridge; 1.3 OZ. Sturdy lightweight construction features 3-D machined body made of 6061-T6 aircraft aluminum and stealthy black finish High-performance tactical pen for emergency rescue, defense and writing The ideal companion for first responders, law enforcement, military or security personnel, wilderness guides, business professionals and anyone in need of a high-performance writing tool Makes an excellent gift for any special occasion, such as birthdays, holidays, anniversaries, graduations, promotions, retirements, Fathers Day and more Features a custom machined pocketclip, O-ring sealed cap, glass-breaker tip and a Rite in the Rain ink cartridge