If you're looking for a reliable companion for your outdoor adventures, the ONTOS II fixed blade knife is the choice for you. Perfect for those who enjoy camping, hiking, and trekking, this knife is designed to offer the perfect balance of light weight, durability, and exceptional performance. Its name, inspired by the Greek word “ontos,” meaning “the essence,” embodies the perfect blend of strength and versatility. With a forprene handle designed to provide a secure and comfortable grip, ONTOS II allows you to work with precision in even the most difficult conditions, offering total control even when the weather is inclement.

The full flat blade is designed for a precise, deep cut, ensuring high performance and durability. Its well-balanced construction allows you to tackle any task, whether it's cutting wood, thin branches, paracord or ropes. ONTOS II will never let you down, offering reliability and consistent performance in any situation.

The ONTOS II Expeditions version is designed for those who demand the ultimate in performance and reliability. The knife features a desert-colored handle and is made of Böhler N690 steel, treated to 58 HRC with a stone-washed finish and MIL-C-13924 burnishing to ensure optimal strength, long edge life and protection against oxidation. It comes with a desert Cordura scabbard with MOLLE system, which includes a mini pouch with a flammable paracord lanyard for emergencies and a Firesteel for lighting fires, so you're always ready even in the most critical situations.

With ONTOS II, every adventure will be supported by a knife that combines superior performance, functionality and durability, making you feel ready to face any challenge.

Intended Use: Heavy Utility / Hiking
Production Type: Industrial
Country of manufacture: Italy
Blade: N690Co 58HRC stainless steel
Surface Treatment: Burnishing MIL-C-13924 Stone Washed
Handle: Forprene
Blade Length: 167mm.
Blade thickness: 6mm.
Total length: 299mm.
Balance: advanced
Weight: 311g.
Sheath: nylon, MOLLE compatible, with detachable front sheath
Packaging: cardboard box with Extrema Ratio logos.
Notes: includes a firesteel (tinder) and a firecord (flammable paracord thread) for lighting emergency fires

Profilo Aziendale

Extrema Ratio è un'azienda specializzata nella progettazione e produzione di coltelleria professionale per uso militare, pubblico e soccorso. La produzione si colloca nella fascia medio-alta, con un focus su attrezzature funzionali, durevoli e di alta qualità a costi competitivi per le amministrazioni pubbliche e clienti istituzionali.

I processi produttivi combinano tecniche industriali per garantire efficienza e scalabilità con lavorazioni artigianali che assicurano qualità e affidabilità, come le affilature manuali. L’azienda vanta un’esperienza consolidata grazie alla collaborazione con le Forze Armate italiane e internazionali, che ha permesso di sviluppare prodotti altamente specializzati.

Extrema Ratio si distingue per l'adozione dei migliori materiali, trattamenti innovativi e test interni di resistenza. Collabora con le Università di Perugia e Firenze per l'ergonomia e la qualità tecnica dei suoi prodotti. È certificata ISO 9001 e fornisce le Forze Armate italiane e francesi, nonché altre unità militari e di pubblica sicurezza internazionali.

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Company Profile

Extrema Ratio specializes in the design and production of professional knives for military, law enforcement, and rescue use. The company operates in the mid-high market segment, focusing on functional, durable, and high-quality equipment at competitive prices for public administrations and institutional clients.

The production process combines industrial techniques for efficiency and scalability with handcrafted processes that ensure quality and reliability, such as manual sharpening. The company has extensive experience, built through collaborations with both Italian and international Armed Forces, which has led to the development of highly specialized products.

Extrema Ratio stands out for using the best materials, innovative treatments, and conducting in-house resistance tests. The company collaborates with the University of Perugia for ergonomic design and the University of Florence for technical quality. It is ISO 9001 certified and supplies the Italian and French Armed Forces, as well as various international military and law enforcement units.