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Discover our advantages:

1) Superior quality: Extrema Ratio products are made with the highest quality materials and follow rigorous production standards, ensuring durability and reliability over time.
2) Specialization: The company boasts a long experience in the defense sector, offering products specifically designed to meet the needs of professionals and enthusiasts.
3) Made in Italy: By purchasing an Extrema Ratio product you choose a product of excellence, entirely made in Italy, supporting craftsmanship and the national industry.

We also deal with: Cutting weapons, Military equipment and Diving knives



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Haven't found the solution for your defense yet? The answer to your problems is Extrema Ratio.

Extrema Ratio offers a wide range of products and services for the defense sector, ensuring the highest quality and reliability. The company specializes in the import of weapons and accessories, the production of specific accessories and the supply of reactive ballistic targets.

1° Needs Identification

It is essential to request all the necessary information, such as technical sheets, certifications, stock availability and prices.

2° Analysis of the offer

Once you have received the proposal, it is important to carefully evaluate it in every aspect, comparing it with your needs and with the offers of other suppliers.

3° Purchase and After-Sales Assistance

If necessary, you can contact the after-sales assistance service of Extrema Ratio to obtain technical support or solve any problems.


Wide range of products available to satisfy every need. Simple online or in-store purchasing procedure. Fast and safe delivery worldwide. Dedicated customer service for any need.


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Extrema Ratio offers a complete solution for those looking for high quality products in the defense sector.

Our offer includes:

  • High quality products: Knives, accessories, weapons and ballistic targets.
  • A wide range of premium tactical knives designed for military, law enforcement, and outdoor survival.
  • Innovative multi-functional tools, ideal for extreme environments and diverse operational needs.
  • Customizable options, tailored to meet specific professional requirements.

You will benefit this and that:

  • Top-tier materials, such as Böhler N690 steel and Forprene, ensuring durability and reliability.
  • Italian craftsmanship, renowned for precision and attention to detail.
  • Products that undergo rigorous testing to guarantee maximum performance in challenging conditions.

Our product line consists of:

  • Cutting-edge designs created to provide efficiency, safety, and versatility.
  • Support from a worldwide network of retailers and service providers, ensuring assistance wherever you are.
  • A commitment to excellence, offering tools that are trusted globally by professionals in demanding fields.
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July 4th deals

Extrema Ratio, an elite company celebrated for its top-tier blades, offers a wide range of products tailored to different purposes. Our assortment includes military-grade, defense, hunting, and survival knives, all of them designed with accuracy and robustness in mind. Beyond blades, we also provide gear such as storage solutions, tactical storage, and maintenance tools, catering to both expert and hobbyist users. Our knives are favored by armed forces, security forces, and survivalists worldwide, thanks to our dependability and innovative designs. This company's focus on craftsmanship and innovation ensures that each product lasts for years, even in the most demanding conditions.

Best Extrema Ratio Blades: Modern Engineering Combines with Functionality

Among our standout offerings is the Requiem Black, a agile, multipurpose tactical knife. This sharp-edged stiletto features a single guard and comes with a specialized Aspis nylon sheath, ensuring both practicality and portability. Another standout product is the Satre Stone Washed, a compact yet robust full-tang knife. Its construction makes it ideal for a diverse selection of tasks, from everyday tasks to more intensive operations. For those seeking a sturdy pocket knife, the MF1 Last Call is remarkable. Well-known for its functional design and top efficiency, it has garnered a reputation for reliability and robustness among users. Additionally, the RAO II, a heavy-duty folding knife, is built to withstand harsh conditions, making it a top choice for survivalists.

Mastery and Longevity: The Extrema Ratio Benchmark

Extrema Ratio's philosophy for superior standards is evident in its meticulous engineering and manufacturing processes. Each product passes through rigorous testing to ensure it meets the most demanding criteria of efficiency and strength. The company always invests in R&D, incorporating advanced materials and user-friendly features to improve functionality. This dedication has strengthened its standing as a trusted provider of professional-grade blades and accessories. Whether for tactical operations, survival challenges, or everyday use, Extrema Ratio products stand as a testament to superior quality, offering unparalleled performance, functionality, and toughness in each knife.

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Our numbers

300+
Product

100.000+
Satisfied Customers

50+
Resellers Store

They Say About Us... Testimonials

The opinions and experiences of those who have already tried our solution.

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Available even during closing hours

One of the bests manufacturer. Consistent proven quality. Great ergonomic handle design. I love their products for decades. At the beginning their products were just a dream for me. But now i am a collector and field user. When i am out, some of their products are with me beside of others. But 1-2-3 Extremas are always represented. If just one blade would be possible, that will be Extrema for me. The big Q is which one

It is an all-Italian pride!

It has a professionalism that other companies dream about at night. I have been using ERs for years and they have never let me down. Five-star after-sales service. I sent a RAO back to the factory with worn pins problems and ruined blade due to Dell use, they returned it to me in better condition than when it was new! THANK YOU1000 ALWAYS NUMBER 1!

Extrema ratio amazed me and not a little!!!

I pointed out via email a sleeving problem and the next day I was contacted by phone directly by the sales manager.....no small feat for a company of this caliber!!! Very nice person friendly and affable...solved the problem with professionalism and seriousness.... Basically I get my knife changed without setting foot out of the house and at no extra charge ,via courier...... Thank you Extrema ratio and congratulations again!!!!!


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Some of our products

These are some products that we have made for our customers to solve the quality and efficiency problems required.

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Neck Knives
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Diving Knives
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Karambit
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Survival Knives

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Innovation and Mastery: Our Vision and Production

Extrema Ratio combines a vision focused on innovation and maximum reliability with manufacturing that combines Italian craftsmanship, the highest quality materials, and advanced technologies to create elite instruments capable of tackling the most extreme challenges.

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Vision

Our philosophy is to produce technical equipment of excellent functional value, long operational life and quality consistency. These factors, over time, have become witnesses of our philosophy, based on the quality and uniqueness of each individual piece. Our products are professional technical tools, designed and built to solve problems.

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Production

There are unique lines that characterize and distinguish our production. The high level of quality is given by the functionality of the projects, the choice of the best materials and the most modern treatments applied to our knives. We produce few items because we believe in their peculiarity; each one of these is designed for a specific use.

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FAQ - Frequently Asked Questions

All the complete answers to the most frequently asked questions about our products.

What materials are used to produce Extrema Ratio knives?

Extrema Ratio knives are crafted using the highest quality materials. The blades are made from premium steels such as N690, known for their exceptional strength, corrosion resistance, and edge retention. For the handles, we use innovative materials like Forprene, which ensures durability, ergonomic comfort, and resistance to extreme conditions.

Are Extrema Ratio products also suitable for hobby use?

Absolutely! Extrema Ratio products are designed to meet the needs of both professionals and enthusiasts. Whether you are camping, trekking, or engaging in survival activities, our knives and tools offer exceptional performance, reliability, and safety, making them perfect for outdoor hobbies.

How can I place an order?

You can conveniently place an order through the official Extrema Ratio website, ensuring access to our complete catalog and exclusive offers. Additionally, our products are available at a wide network of authorized retailers worldwide. Check our website to find the nearest retailer.

What are the delivery times?

Delivery times depend on the destination and the product chosen. Typically, orders are processed quickly to ensure timely shipping. For international orders, delivery times may vary based on local logistics. Once your order is placed, you will receive updates with tracking information for your shipment.

Do you offer after-sales service?

Yes, Extrema Ratio provides a comprehensive after-sales service to assist you with any needs. Our global network of authorized retailers and service centers ensures that help is always within reach. Renowned for reliability and excellence, Extrema Ratio is trusted by customers worldwide, offering prompt support and solutions for your satisfaction.

Can I customize my products?

In some cases, product customization is available. Whether you're looking to personalize your knife with specific engravings or require special modifications, our customer service team is here to assist. Contact us directly for more information on the customization options available.

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public safety and rescue use.
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Extrema Ratio S.R.L.
Traversa delle Ripalte,72/78
59100 Prato (PO), Italy
vat: 02481870976

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