Features: Black burnished clip point blade of Bohler N690 steel. Stacked leather handle with a steel guard and brass pommel. Brown leather belt sheath. Description: The Extrema Ratio Primo Corso is an accurate replica of the dagger given to members of the Italian Navy special forces unit, the Gruppo Operativo Incursori, when the class graduated their first training class in 1952. Of course, Extrema Ratio reproduced this piece of military history with superior materials such as Bohler N690 cobalt steel. A tactical knife made for military combat swimmers, this excellent fixed blade knife can be a versatile tool in survival, camping, and hunting adventures. Add this hardcore combat knife to your collection today! While you're here, take a look at some excellent pocket knives for a companion everyday-carry piece.