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For this 2019/2020 collaboration, exclusive to Collini Cutlery, we have decided to offer a series of best sellers produced by Extrema Ratio. Knives made with the famous San Mai steel produced by the Japanese Takefu Steel. Specifically, for the central sheet we used the carbonaceous V-Toku2 at 62 / 63HRC and the stainless SUS410 for the two external sheets, in order to guarantee a very high cutting, penetration and sealing capacity of the wire together with an ease of regrinding and maintenance but at the same time the blade has a remarkable resistance to corrosion and an important increase in resilience given by the type of foreign steel and the laminated structure.
SHRAPNEL OG model: for this First Production Run, a circulation of 10 pieces numbered from 1 to 10 was produced.
SHRAPNEL OG is a truly multi-purpose "back-up", with strong combat attitudes. The leaf blade is characterized by a wide flat winding, with a narrow sharpening angle which makes it particularly sharp. The rigid sheath can be positioned horizontally, vertically or inclined at 45 °. The SHRAPNEL OG is produced without the top guard.
Use: tactical, sports, hiking, collection
Blade: integral, in Japanese laminated steel (San Mai) with cutting edge in V-Toku2 (carbon) at 62 / 63HRC and external cheeks in SUS410 (stainless steel) Handle: forprene Blade length: 90mm. Blade thickness: 6.5mm. Total length: 210mm. Balancing: set back to 0.5cm. from the guard branch Weight: 190g. Sheath: ABS with Tek-Lok multiposition attachment Notes: Numbered edition - cardboard box with Extremaratio logos and certificate
As in the ancient swords of the Japanese Samurai.
Rolled steel - imported into Italy from Collini Steel directly from the Japanese Takefu Steel - is based on the ancient Japanese tradition in the creation of the famous Samurai swords. Already in 1100 the expert Japanese blacksmiths in fact combined different materials to give the Katana swords incredible cutting capabilities combined with a resistance and flexibility previously unknown. It is thanks to this revolutionary construction technique that the swords from Samurai have been preserved to the present day becoming one of the most fascinating objects made by man. Following this tradition applied to modern metallurgy, we are now able to have technologically advanced steels already tested and used in cutlery also by famous brands such as Fallkniven, Cold Steel, Mcusta, Kai, Sog, Zwilling, Rockstead, etc.
Characteristics of San Mai steel: These are different types of metals bonded together to create a composite that encloses and intensifies the strengths of the metals taken individually:
- Longer tool life thanks to the use of high quality steel with a high carbon content (V-Toku2, VG10, CoS, Shiro) or sintered (SPG2), in the heart of the sheet (Core Steel), the blade once hardened, reaches hardness and cutting performance significantly higher than that achieved with the use of traditional steels.
- Greater resilience built with the principle of Japanese swords, multilayer steel is difficult to break thanks to the toughness of the central steel (Core Steel) and the elasticity of the steel used for the lateral coating (Stainless Steel).
- Better corrosion resistance the steel used for the external layers (Stainless Steel) guarantees the blade a high resistance to corrosion. The combination of the two or more materials used by Takefu Steel generates, at the galvanic level, a structure that improves the corrosion resistance also on the wire.
- Easy processing even after heat treatment although normally the steel becomes harder after hardening, the lateral steel used in multi-layer processing does not lose its softness and allows easy processing, drilling or welding even after heat treatment. For optimum performance of the blade, cryogenic treatment is recommended.
- Improvement of the aesthetic result The knives made with multistate steel or with damask pattern at the end of the processing are aesthetically elegant, refined and highly appreciated by collectors all over the world.
Company profile: Extrema Ratio is specialized in the development and manufacture of professional knives expecially for Military, Public Safety and Rescue.
The level of production is high, the philosophy of the brand is to produce technical equipment of great functional value, long service life, serial consistent quality at reasonable cost to the public authorities and institutional customers. In other words, a top-quality product at competitive prices.
The production is characterized by industrial and handmade finishing process, feature that has a strong identity to the company: are automated and industrialized only the processes that guarantee uniformity, high production capacity and economies of scale, remain artisanal processes, such as checks, guarantee the reliability and high overall quality of the individual pieces within the series, as well as operations, which by their very nature, derive their functionality from the user's manual features such as flat sharpening, which are carried out and all exclusively by hand.
Thanks to the interaction with the Armed Forces, Italian and international, the company has collected and continues to accumulate valuable experience and information that allow it to proceed with the development of truly qualified and professional knives.
"We manufactured to specifications or we develop new products to solve problems that the customer indicates."
The company's success is that it has worked with the Armed Forces with the intention, successfully achieved, to raise quality and functional standards of the modern military knives.
The high level of quality is given by the design's function, from the choice of the best materials and the latest treatments.
The company carries out internal tests of effectiveness and durability of the products through the development of specific instruments.
With the collaboration of the Faculty of Kinesiology, University of Perugia who oversaw the ergonomics of its products: the essential skills of the same interface with the user.
With the collaboration of the Faculty of Engineering, University of Florence who care tests and analysis of structures, materials and surface finishes of the product. The production potential is sufficient to ensure governmental supplies on a large scale, with very high quality standards.
The company is certified ISO 9001 and is registered among the suppliers of the Armed Forces, NATO code (N / CAGE): AD856.
Extrema Ratio is the official supplier of the Italian and French Armed Forces, as well as actively cooperates and is a supplier of the best Italian units and some of the best military units and public safety companies around the world.
ExtremaRatio - Shrapnel OG Satin - San Mai V-TOKU2 Limited Edition - knife
For this 2019/2020 collaboration, exclusive to Collini Cutlery, we have decided to offer a series of best sellers produced by Extrema Ratio. Knives made with the famous San Mai steel produced by the Japanese Takefu Steel. Specifically, for the central sheet we used the carbonaceous V-Toku2 at 62 / 63HRC and the stainless SUS410 for the two external sheets, in order to guarantee a very high cutting, penetration and sealing capacity of the wire together with an ease of regrinding and maintenance but at the same time the blade has a remarkable resistance to corrosion and an important increase in resilience given by the type of foreign steel and the laminated structure.
SHRAPNEL OG model: for this First Production Run, a circulation of 10 pieces numbered from 1 to 10 was produced.
SHRAPNEL OG is a truly multi-purpose "back-up", with strong combat attitudes. The leaf blade is characterized by a wide flat winding, with a narrow sharpening angle which makes it particularly sharp. The rigid sheath can be positioned horizontally, vertically or inclined at 45 °. The SHRAPNEL OG is produced without the top guard.
Use: tactical, sports, hiking, collection
Blade: integral, in Japanese laminated steel (San Mai) with cutting edge in V-Toku2 (carbon) at 62 / 63HRC and external cheeks in SUS410 (stainless steel) Handle: forprene Blade length: 90mm. Blade thickness: 6.5mm. Total length: 210mm. Balancing: set back to 0.5cm. from the guard branch Weight: 190g. Sheath: ABS with Tek-Lok multiposition attachment Notes: Numbered edition - cardboard box with Extremaratio logos and certificate
As in the ancient swords of the Japanese Samurai.
Rolled steel - imported into Italy from Collini Steel directly from the Japanese Takefu Steel - is based on the ancient Japanese tradition in the creation of the famous Samurai swords. Already in 1100 the expert Japanese blacksmiths in fact combined different materials to give the Katana swords incredible cutting capabilities combined with a resistance and flexibility previously unknown. It is thanks to this revolutionary construction technique that the swords from Samurai have been preserved to the present day becoming one of the most fascinating objects made by man. Following this tradition applied to modern metallurgy, we are now able to have technologically advanced steels already tested and used in cutlery also by famous brands such as Fallkniven, Cold Steel, Mcusta, Kai, Sog, Zwilling, Rockstead, etc.
Characteristics of San Mai steel: These are different types of metals bonded together to create a composite that encloses and intensifies the strengths of the metals taken individually:
- Longer tool life thanks to the use of high quality steel with a high carbon content (V-Toku2, VG10, CoS, Shiro) or sintered (SPG2), in the heart of the sheet (Core Steel), the blade once hardened, reaches hardness and cutting performance significantly higher than that achieved with the use of traditional steels.
- Greater resilience built with the principle of Japanese swords, multilayer steel is difficult to break thanks to the toughness of the central steel (Core Steel) and the elasticity of the steel used for the lateral coating (Stainless Steel).
- Better corrosion resistance the steel used for the external layers (Stainless Steel) guarantees the blade a high resistance to corrosion. The combination of the two or more materials used by Takefu Steel generates, at the galvanic level, a structure that improves the corrosion resistance also on the wire.
- Easy processing even after heat treatment although normally the steel becomes harder after hardening, the lateral steel used in multi-layer processing does not lose its softness and allows easy processing, drilling or welding even after heat treatment. For optimum performance of the blade, cryogenic treatment is recommended.
- Improvement of the aesthetic result The knives made with multistate steel or with damask pattern at the end of the processing are aesthetically elegant, refined and highly appreciated by collectors all over the world.
Company profile: Extrema Ratio is specialized in the development and manufacture of professional knives expecially for Military, Public Safety and Rescue.
The level of production is high, the philosophy of the brand is to produce technical equipment of great functional value, long service life, serial consistent quality at reasonable cost to the public authorities and institutional customers. In other words, a top-quality product at competitive prices.
The production is characterized by industrial and handmade finishing process, feature that has a strong identity to the company: are automated and industrialized only the processes that guarantee uniformity, high production capacity and economies of scale, remain artisanal processes, such as checks, guarantee the reliability and high overall quality of the individual pieces within the series, as well as operations, which by their very nature, derive their functionality from the user's manual features such as flat sharpening, which are carried out and all exclusively by hand.
Thanks to the interaction with the Armed Forces, Italian and international, the company has collected and continues to accumulate valuable experience and information that allow it to proceed with the development of truly qualified and professional knives.
"We manufactured to specifications or we develop new products to solve problems that the customer indicates."
The company's success is that it has worked with the Armed Forces with the intention, successfully achieved, to raise quality and functional standards of the modern military knives.
The high level of quality is given by the design's function, from the choice of the best materials and the latest treatments.
The company carries out internal tests of effectiveness and durability of the products through the development of specific instruments.
With the collaboration of the Faculty of Kinesiology, University of Perugia who oversaw the ergonomics of its products: the essential skills of the same interface with the user.
With the collaboration of the Faculty of Engineering, University of Florence who care tests and analysis of structures, materials and surface finishes of the product. The production potential is sufficient to ensure governmental supplies on a large scale, with very high quality standards.
The company is certified ISO 9001 and is registered among the suppliers of the Armed Forces, NATO code (N / CAGE): AD856.
Extrema Ratio is the official supplier of the Italian and French Armed Forces, as well as actively cooperates and is a supplier of the best Italian units and some of the best military units and public safety companies around the world.
La Coltelleria Collini è orgogliosa di presentare un'opera d'arte della coltelleria: l'Extrema Ratio Caimano Nero N.A. Ranger XXV Anniversarium Limited Edition.
Questo straordinario coltello, limitato a soli 250 pezzi in tutto il mondo, rappresenta l'apice dell'ingegneria e del design nel campo delle lame tattiche. Creato per celebrare il venticinquesimo anniversario di Extrema Ratio, il Caimano Nero combina un design senza tempo con le più moderne tecnologie.
Perfetto per collezionisti e appassionati, questo modello esemplifica la dedizione di Extrema Ratio all'eccellenza e l'innovazione.
Un'opportunità unica per aggiungere alla propria collezione un pezzo di storia della coltelleria.
Esploriamo insieme l'Extrema Ratio S-THil, un coltello studiato e realizzato per l'ambiente operativo, ma perfettamente funzionale anche in un contesto outdoor. Prodotto con la consueta eccellenza italiana, l'S-THil è un oggetto di spettacolare bellezza, con linee affascinanti e una costruzione robusta e affidabile.
Realizzato in acciaio N690 di 5 mm di spessore, l'Extrema Ratio S-THil offre un'ottima tenuta nell'affondo, garantendo sicurezza e stabilità. La sua struttura monolitica lavorata da un unico pezzo di acciaio, accompagnata da un filo singolo affilatissimo, lo rende una scelta eccellente per qualsiasi avventura all'aperto.
Nella recensione, Floriano sottolinea la versatilità del coltello, dalla sua efficacia in situazioni operative all'uso nel bosco, dimostrando la sua affidabilità in una vasta gamma di contesti. L'S-THil
Da oltre 20 anni, Coltelleria Collini è un rivenditore orgoglioso del rinomato brand Extrema Ratio. Oggi, abbiamo il piacere di presentare l'ultimo progetto di Extrema Ratio, la serie Ferrum. Questa collezione di coltelli innovativa è stata progettata per soddisfare una varietà di esigenze, dall'uso quotidiano alle operazioni di soccorso e d'impiego tattico o sportivo.
Il Ferrum E è un coltello chiudibile EDC (Every Day Carry) che incarna la semplicità, l'essenzialità e la funzionalità. Questo modello vanta una lama drop di forma sottile e compatta e presenta guancette in alluminio anticorodal anodizzato che formano un'impugnatura leggera, slanciata e allo stesso tempo estremamente resistente. Grazie al suo design compatto, il Ferrum E può essere alloggiato comodamente in un taschino, in piccole fondine per torce o all'interno di un
