vegetables knives
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ExtremaRatio - Psycho 19cm. - Chef's knife
TACTICAL KNIVES MEET THE KITCHEN!
Extrema Ratio is delighted to apply the strict military standards to a range of professional kitchen knives.
The steel blade is the proven BOHLER N690, a steel enriched with chrome, vanadium, molybdenum and cobalt, hardened to the hardness of 58HRC. The handle is made of Forprene, an elastomer that is in the "NATO standard" for resistance to extreme conditions, and is completely removable from the blade; this makes possible a thorough cleaning and maintenance of the knife.
Each knife comes with its own sheath, also of military origin, which does not take into account the rules of hygiene but ensures safe transport dell'affilatissima blade and protection from shocks that could reduce efficiency. We recommend to use it only for the transport and in the event of long periods of inactivity.
Use: meat / vegetables
Type of production: Industrial
Production Lama: Italy
Blade: stainless steel hardened 58HRC N690Co
Treatment Lama: -
Handle: Forprene
Blade length: 199mm.
Blade thickness: 4mm.
Overall length: 331mm.
Weight: 280g.
Sheath: black leather
Packaging: Cardboard box with logos Extrema Ratio
Note: Can also be used as a knife or sports collectibles12326€302.46Only 0 leftOnly 0 left
Out of stock -
ExtremaRatio - Psycho Desert Camo 15cm. - Chef's knife
TACTICAL KNIVES MEET THE KITCHEN!Extrema Ratio is delighted to apply the strict military standards to a range of professional kitchen knives.
The steel blade is the proven BOHLER N690, a steel enriched with chrome, vanadium, molybdenum and cobalt, hardened to the hardness of 58HRC. The handle is made of Forprene, an elastomer that is in the "NATO standard" for resistance to extreme conditions, and is completely removable from the blade; this makes possible a thorough cleaning and maintenance of the knife.
Each knife comes with its own sheath, also of military origin, which does not take into account the rules of hygiene but ensures safe transport dell'affilatissima blade and protection from shocks that could reduce efficiency. We recommend to use it only for the transport and in the event of long periods of inactivity.
Use: meat / vegetables
Type of production: Industrial
Production Lama: Italy
Blade: stainless steel hardened 58HRC N690Co
Treatment Lama: Laser Desert Camo
Handle: Forprene
Blade length: 153mm.
Blade thickness: 4mm.
Overall length: 287mm.
Weight: 259g.
Sheath: Cordura, compatible M.O.L.L.E.
Packaging: Cardboard box with logos Extrema Ratio
Note: Can also be used as a knife or sports collectibles12325€200.00Only 0 leftOnly 0 leftOut of stock -
ExtremaRatio - Psycho Desert Warfare 19cm. - Chef's knife
TACTICAL KNIVES MEET THE KITCHEN!Extrema Ratio is delighted to apply the strict military standards to a range of professional kitchen knives.
The steel blade is the proven BOHLER N690, a steel enriched with chrome, vanadium, molybdenum and cobalt, hardened to the hardness of 58HRC. The handle is made of Forprene, an elastomer that is in the "NATO standard" for resistance to extreme conditions, and is completely removable from the blade; this makes possible a thorough cleaning and maintenance of the knife.
Each knife comes with its own sheath, also of military origin, which does not take into account the rules of hygiene but ensures safe transport dell'affilatissima blade and protection from shocks that could reduce efficiency. We recommend to use it only for the transport and in the event of long periods of inactivity.
Use: meat / vegetables
Type of production: Industrial
Production Lama: Italy
Blade: stainless steel hardened 58HRC N690Co
Treatment Lama: Laser Desert Camo
Handle: Forprene
Blade length: 199mm.
Blade thickness: 4mm.
Overall length: 331mm.
Weight: 280g.
Sheath: Cordura, compatible M.O.L.L.E.
Packaging: Cardboard box with logos Extrema Ratio
Note: Can also be used as a knife or sports collectibles12322€216.39Only 0 leftOnly 0 leftOut of stock -
ExtremaRatio - Psycho 15cm. - Chef's knife
TACTICAL KNIVES MEET THE KITCHEN!Extrema Ratio is delighted to apply the strict military standards to a range of professional kitchen knives.
The steel blade is the proven BOHLER N690, a steel enriched with chrome, vanadium, molybdenum and cobalt, hardened to the hardness of 58HRC. The handle is made of Forprene, an elastomer that is in the "NATO standard" for resistance to extreme conditions, and is completely removable from the blade; this makes possible a thorough cleaning and maintenance of the knife.
Each knife comes with its own sheath, also of military origin, which does not take into account the rules of hygiene but ensures safe transport dell'affilatissima blade and protection from shocks that could reduce efficiency. We recommend to use it only for the transport and in the event of long periods of inactivity.
Use: meat / vegetables
Type of production: Industrial
Production Lama: Italy
Blade: stainless steel hardened 58HRC N690Co
Treatment Lama: Glazing
Handle: Forprene
Blade length: 153mm.
Blade thickness: 4mm.
Overall length: 287mm.
Weight: 259g.
Sheath: black leather
Packaging: Cardboard box with logos Extrema Ratio
Note: Can also be used as a knife or sports collectibles12321€275.41Only 0 leftOnly 0 leftOut of stock
Professional Kitchen Knives: Complete Guide to the Perfect Choice
Choosing a professional kitchen knife means improving precision, safety, and pleasure in cooking. For over 50 years, Coltelleria Collini has been selecting and testing the best international kitchen knives, collaborating exclusively with official brands and historical manufacturers. Whether you are a chef, an advanced enthusiast, or a demanding home cook, here you will find cutting tools designed to last over time and guarantee consistent performance.
In this category, you will find a complete selection of Japanese, German, Italian, and professional kitchen knives, chosen by blade type, steel, hardness (HRC), and ergonomics, to cover every cooking style and cutting technique.
Japanese Knives & Damascus
Razor-sharp edges, very acute cutting angles, and high-hardness steels (up to 61–63 HRC). The Japanese tradition of Seki is represented by brands like Kai and Miyabi (Zwilling Group), the CROMOVA steel of Global, and the versatility of Kai Wasabi. Ideal for those seeking pure cutting performance, precision, and control.
European Tradition – Forged
Robust, balanced, and easy-to-sharpen knives, designed for intensive daily use. German excellence from Solingen with Wüsthof and Zwilling, combined with the Swiss practicality of Victorinox. The ideal choice for professional kitchens, catering, and advanced home use.
Made in Italy & Blade Types
Italian artisanal tradition with Coltellerie Berti, Due Cigni, and Sanelli. Choose the right knife for every preparation: Chef's Knife, Santoku, as well as complete sets and steak knives.
Why buy kitchen knives from Coltelleria Collini
We don't just sell "blades," but tools for work and passion. Since 1968, Coltelleria Collini has been a reference point for chefs, professionals, and cooking enthusiasts.
- Official Retailers for all featured brands, with guaranteed authenticity.
- Professional sharpening service in-house to restore the edge.
- Real consultation: we help you choose between Chef, Santoku, Nakiri, or Slicing knives.
Kitchen Knives FAQ
Japanese knives are harder, with sharpening angles around 15°, ideal for extremely precise but more delicate cuts. European knives (German and Italian) are more robust, easier to resharpen, and more tolerant to impact, perfect for intensive use.
No, it is strongly discouraged. Aggressive detergents, high temperatures, and impacts damage the edge and the blade surface. It is always preferable to wash knives by hand and dry them immediately after use.