The Atomic Bear tactical pens are designed to write smoothly with a continuous ink flow for a remarkable writing experience. Use the ink cartridge of your choice. They have a tungsten carbide business end for an extraordinary efficient self-defense application. Part of your everyday carry (EDC) they constitute an ideal line of defense that can come with you where guns and knives can't. The impact head will enable you to break a car window in 5 seconds or less to save a passenger. Stranded in a compromised car? Get out before it is too late. Our pens are made of sturdy aircraft aluminum for a maximum durability and a perfect weight and balance. Meet each of the Atomic Bear tactical pens.