Extrema Ratio

Extrema Ratio is a company based in Prato, Italy, and has been designing, manufacturing, and selling high-performance combat knives for military and hunting purposes, for tactical uses, as well as for kitchen since 1997. Extrema Ratio enjoys a reputation for excellence that is unmatched in the military and tactical knife industry.

Extrema Ratio offers a wide range of rugged hunting and pocket knives designed for use in the toughest conditions, making them a great choice for a survival knife or backup tool. The range includes small pocket knives to large Kukris, providing the most options you need in the knife area.

The knives from Extrema Ratio are manufactured using the latest high-tech production methods. Each Extrema Ratio knife is a blend of the best available materials and high-quality craftsmanship. When it comes to knives for survival use, one of the most important requirements is that the knife should be strong. Built for long-lasting durability.

All knives are made of N690 Cobalt Stainless Steel, a steel from a small factory in Austria that is commonly used in the production of surgical instruments. This steel, heat-treated according to their methods, results in a steel of great strength and flexibility. The handles of the fixed blade knives are made of a handle polymer called Forprene, which provides a very secure and comfortable grip even when wet. The tactical or military folding knives have handle scales made of a super strong corrosion-resistant alloy, and the best materials are used throughout to ensure reliability and durability.

Unfortunately, the excellent craftsmanship and quality of our knives lead people to believe that they are practically indestructible. Unfortunately, this is not the case. Even the toughest knife will break when the right torque is reached. Factors determining a knife's strength include blade length, blade thickness and geometry, steel quality, and technical design. Depending on what you expect from a knife, you should consider these characteristics before making a purchase, only then can you make the optimal choice.

Over the years, the increased capacity has allowed Extrema Ratio to expand its operations. As part of these efforts, the company relocated to a new 2004 square meter facility to meet market demand, and quickly established itself as one of the country's leading cutlery manufacturers.

Extrema Ratio serves military and law enforcement agencies as well as commercial markets, and the respective knives are known and in demand worldwide.

The company takes pride in design, material, and quality to deliver a high-end product that meets the strictest military standards.

Production based on state-of-the-art technology merges with traditional craftsmanship, resulting in the pinnacle of this synthesis. The Extrema Ratio design team uses the 3D system to create new models and prototypes. Each hunting or tactical pocket knife design is then carefully inspected and subsequently field-tested.

At this point, the best materials for durability, functionality, and beauty are selected. Each kitchen, utility, or military knife is then assembled by hand, hand-finished, and inspected by the Extrema Ratio craftsmanship team.

First-class craftsmanship and selected materials have contributed to shaping the image of the brand Extrema Ratio worldwide.

Extrema Ratio military knives are consistently developed with direct involvement of the end consumer.

Extrema Ratio knives are developed in close collaboration with Italian and foreign armed forces. No compromises are made in the design to achieve the best performance and functionality. This makes Extrema Ratio's tactical, combat, and military knives known for their exceptional robustness, being strong enough to meet the requirements of the strictest military standards.

To achieve all this, a long-term cooperation project between the Facoltà di Scienze Motorie (PG) and Extrema Ratio was launched.

Through the challenges of solving technical problems, searching for an efficient and ergonomic design, and optimal operating parameters, the partnership with the Facoltà di Scienze Motorie (PG) has created innovative opportunities throughout the manufacturing process.

With the aim of developing unique knives that are suitable for both the military and law enforcement community as well as enthusiasts, Extrema Ratio has become a globally recognized brand known for its commitment to developing the next great combat knife.