Sport, Military and Collectible Knives | Coltelleria Collini

Uncompromising versatility and robustness - The ideal companion for those who approach hunting as a discipline and technique.
The VENATUS F Nitrogen Black Satin with black G10 handle is designed to tackle every stage of the hunt. The 12 cm satin-finished blade, with spear point profile and counter-grinding, is made of Nitrogen steel, ideal for humid environments and prolonged use. The technical and resistant G10 handle guarantees control and durability even in the most difficult conditions.

Intended use: Hunting / Light Utility

Type of production: Industrial
Country of production: Italy
Blade: full tang, made of Nitrogen steel
Blade finish: Satin
Handle: G10
Blade length: 119 mm.
Blade thickness: 3.8 mm.
Total length: 248 mm.
Weight: 235 g.
Sheath: leather, ambidextrous, modular, made in Italy
Packaging: Cardboard box with Extrema Ratio logos
Notes: -

VIPERA is born from the fusion between the tactical and survival worlds, combining speed of use, robustness, and precision in a knife weighing less than 100 grams. Equipped with an elongated drop-point blade with a full flat grind and narrow edge, it offers penetration, smooth cutting, and hardness up to 61 HRC. It is available in two high-performance steels, both with excellent edge retention and corrosion resistance. The ergonomic handle with integrated guard ensures maximum control in all conditions, while the ASPIS nylon sheath allows for stable and versatile carrying.

VIPERA Nitrogen (Stone Washed, HCS, Ranger Green)
This variant is designed for outdoor, survival, bushcraft, and prepping users: areas where reliability in the field, weather resistance, and maintainability are essential. Nitrogen steel maintains excellent edge retention, combined with excellent rust resistance and, above all, greater ease of resharpening compared to M390. The increased resilience makes these models more tolerant to the abuse typical of a field environment.

Technical insight into nitrogen-added steels
Nitrogen steels, or nitrogen-added steels, are alloys in which nitrogen is used as an alloying element instead of, or in addition to, carbon. Although nitrogen is less effective than carbon in hardening the martensitic matrix, it has the advantage of forming stable compounds with chromium to a much lesser extent. This allows a greater amount of chromium to be kept in solid solution, improving corrosion resistance. In addition, nitrogen contributes to the hardness and stability of the structure, giving these steels a good balance between hardness, toughness, and corrosion resistance. Compared to traditional martensitic steels, nitrogen steels can therefore offer a better combination of mechanical properties and resistance to chemicals, while maintaining good workability and sharpenability characteristics.

Intended use: Outdoor / Utility / Bushcraft

Type of production: Industrial
Country of production: Italy
Blade: nitrogen-alloyed stainless steel
Blade treatment: Stonewashed
Handle: Forprene
Blade length: 116mm.
Blade thickness: 4 mm.
Total length: 236 mm.
Weight: 95 g.
Sheath: ASPIS nylon with two multi-position clips, M.O.L.L.E. compatible.
Packaging: Cardboard box with Extrema Ratio logos.
Notes: -

VIPERA is born from the fusion between the tactical and survival worlds, combining speed of use, robustness, and precision in a knife weighing less than 100 grams. Equipped with an elongated drop-point blade with a full flat grind and narrow edge, it offers penetration, smooth cutting, and hardness up to 61 HRC. It is available in two high-performance steels, both with excellent edge retention and corrosion resistance. The ergonomic handle with integrated guard ensures maximum control in all conditions, while the ASPIS nylon sheath allows for stable and versatile carrying.

VIPERA Nitrogen (Stone Washed, HCS, Ranger Green)
This variant is designed for outdoor, survival, bushcraft, and prepping users: areas where reliability in the field, weather resistance, and maintainability are essential. Nitrogen steel maintains excellent edge retention, combined with excellent rust resistance and, above all, greater ease of resharpening compared to M390. The increased resilience makes these models more tolerant to the abuse typical of a field environment.

Technical insight into nitrogen-added steels
Nitrogen steels, or nitrogen-added steels, are alloys in which nitrogen is used as an alloying element instead of, or in addition to, carbon. Although nitrogen is less effective than carbon in hardening the martensitic matrix, it has the advantage of forming stable compounds with chromium to a much lesser extent. This allows a greater amount of chromium to be kept in solid solution, improving corrosion resistance. In addition, nitrogen contributes to the hardness and stability of the structure, giving these steels a good balance between hardness, toughness, and corrosion resistance. Compared to traditional martensitic steels, nitrogen steels can therefore offer a better combination of mechanical properties and resistance to chemicals, while maintaining good workability and sharpenability characteristics.

Intended use: Outdoor / Utility / Bushcraft

Type of production: Industrial
Country of production: Italy
Blade: nitrogen-alloyed stainless steel
Blade treatment: Stonewashed
Handle: Forprene
Blade length: 116mm.
Blade thickness: 4 mm.
Total length: 236 mm.
Weight: 95 g.
Sheath: ASPIS nylon with two multi-position clips, M.O.L.L.E. compatible.
Packaging: Cardboard box with Extrema Ratio logos.
Notes: -