The full size of the knife was 16.5 cm.

The stiffening ribs and dol on the blade provided strength sufficient for punching a wooden board. For that time, it was the most durable of plastic knives, designed for use in a variety of situations - from self-defense to use as pegs for a camping tent.

The name of the knife is due to the fact that it was invisible to metal detectors. Abbreviation C.I. A. (CIA) in the name of the knife is a synonym for everything related to intelligence and espionage. That is, the name of the knife can be translated into Russian as “Spy knife for opening letters”. The knife was very popular and served as a model for creating numerous clones under the general name CIA Letter Opener.

*Just for fun, do not use against people and animals.