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 hiking, 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 even in 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 S600 Black is the ideal choice for those seeking exceptional performance and unparalleled wear resistance. With its vibrant green-colored handle, it stands out not only for its aesthetics, but also for the quality of the materials used. Made of Böhler S600 steel, a top-grade material used in the production of metalworking tools, this tool is cryogenically treated to ensure an extraordinary hardness of 64 HRC. The Teflon-based “EXP DARK” coating, developed by Extrema Ratio, further enhances its durability and performance. Complemented by a green thigh scabbard with M.O.L.L.E. system, the ONTOS II S600 Black is ready to be easily integrated into your gear, ensuring practicality and durability in any situation.

Intended Use: Heavy Utility / Hiking
Production type: Industrial
Country of manufacture: Italy
Blade: S600 steel at 64HRC
Surface treatment: Exp Dark
Handle: Forprene
Blade length: 167mm.
Blade thickness: 6mm.
Total length: 299mm.
Balance: advanced
Weight: 344g.
Sheath: nylon, MOLLE compatible
Packaging: cardboard box with Extrema Ratio logos
Notes: blade made of high carbon steel, always keep well cleaned and oiled during storage to prevent rust and oxidation

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.