EX3909OP Extrema Ratio OperativoThe EX3909OP Operativo is a 12. 5" fixed blade built for serious use: a 7. 25" Bohler N690 cobalt stainless blade with MIL spec black finish paired to a full tang NATO elastomer handle that won't slip in wet conditions. The dual sheath system sets it apart, combining a soft nylon outer calf strap with a reinforced fiberglass composite inner sheath that protects the blade and allows quick access. This is a working knife designed in the Italian