Knife - Essential Tool for Camping, Outdoor Adventure and collection
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Extrema Ratio - Tuscan Knife - Black S600 64HRC & Green G10 - Knife
The Tuscan S600 Black by Extrema Ratio is a high-end tactical knife designed to deliver outstanding performance in complex operational scenarios. Crafted from Böhler S600 steel, cryogenically tempered to 64 HRC, it provides unparalleled hardness and wear resistance, ensuring a sharp cutting edge for longer. The EXP DARK finish protects the blade from oxidation, making it more durable even in extreme environmental conditions.
The lightweight full tang construction optimizes the knife’s balance, shifting the weight toward the tip to maximize efficiency in chopping and batoning operations. The handle, made of G10 with ergonomic scales, ensures a firm and comfortable grip, both with gloves and bare hands. The green Cordura sheath, M.O.L.L.E compatible, guarantees versatile and secure transport.
Designed for tactical and military use, the Tuscan S600 Black is the ideal companion for professional operators and survival and bushcraft enthusiasts looking for a reliable, durable, and high-performance knife.
Intended use: Tactical / Military
Production type: Industrial
Country of manufacture: Italy
Blade: Full tang, Böhler S600 steel (64 HRC)
Blade finish: EXP DARK (MIL-C-13924 coating)
Handle: G10, ergonomic with Extrema Ratio design
Blade length: 167mm
Blade thickness: 6mm
Overall length: 306mm
Weight: 449g
Locking mechanism: -
Clip: -
Sheath: Cordura, MOLLE compatible, with thigh strap
Packaging: Cardboard box with Extrema Ratio logos
Additional notes: Tang can be used as a glass breakerER-TUS-S600B€392.62Only 99 leftOnly 99 left
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ExtremaRatio - Ontos II S600 Black - Exp Dark S600 & Green Forprene - knife
If you're looking for a reliable companion for your outdoor adventures, the ONTOS II fixed blade knife is the choice for you. Perfect for those who enjoy camping, hiking, and hiking, this knife is designed to offer the perfect balance of light weight, durability, and exceptional performance. Its name, inspired by the Greek word “ontos,” meaning “the essence,” embodies the perfect blend of strength and versatility. With a forprene handle designed to provide a secure and comfortable grip, ONTOS II allows you to work with precision even in the most difficult conditions, offering total control even when the weather is inclement.
The full flat blade is designed for a precise, deep cut, ensuring high performance and durability. Its well-balanced construction allows you to tackle any task, whether it's cutting wood, thin branches, paracord or ropes. ONTOS II will never let you down, offering reliability and consistent performance in any situation.
The ONTOS II S600 Black is the ideal choice for those seeking exceptional performance and unparalleled wear resistance. With its vibrant green-colored handle, it stands out not only for its aesthetics, but also for the quality of the materials used. Made of Böhler S600 steel, a top-grade material used in the production of metalworking tools, this tool is cryogenically treated to ensure an extraordinary hardness of 64 HRC. The Teflon-based “EXP DARK” coating, developed by Extrema Ratio, further enhances its durability and performance. Complemented by a green thigh scabbard with M.O.L.L.E. system, the ONTOS II S600 Black is ready to be easily integrated into your gear, ensuring practicality and durability in any situation.
Intended Use: Heavy Utility / Hiking
Production type: Industrial
Country of manufacture: Italy
Blade: S600 steel at 64HRC
Surface treatment: Exp Dark
Handle: Forprene
Blade length: 167mm.
Blade thickness: 6mm.
Total length: 299mm.
Balance: advanced
Weight: 344g.
Sheath: nylon, MOLLE compatible
Packaging: cardboard box with Extrema Ratio logos
Notes: blade made of high carbon steel, always keep well cleaned and oiled during storage to prevent rust and oxidationER-ON2-S600€376.23Only 1 leftOnly 1 left -
ExtremaRatio - Ontos II Expeditions - Stonewashed N690Co & Desert Forprene - knife
If you're looking for a reliable companion for your outdoor adventures, the ONTOS II fixed blade knife is the choice for you. Perfect for those who enjoy camping, hiking, and trekking, this knife is designed to offer the perfect balance of light weight, durability, and exceptional performance. Its name, inspired by the Greek word “ontos,” meaning “the essence,” embodies the perfect blend of strength and versatility. With a forprene handle designed to provide a secure and comfortable grip, ONTOS II allows you to work with precision in even the most difficult conditions, offering total control even when the weather is inclement.
The full flat blade is designed for a precise, deep cut, ensuring high performance and durability. Its well-balanced construction allows you to tackle any task, whether it's cutting wood, thin branches, paracord or ropes. ONTOS II will never let you down, offering reliability and consistent performance in any situation.
The ONTOS II Expeditions version is designed for those who demand the ultimate in performance and reliability. The knife features a desert-colored handle and is made of Böhler N690 steel, treated to 58 HRC with a stone-washed finish and MIL-C-13924 burnishing to ensure optimal strength, long edge life and protection against oxidation. It comes with a desert Cordura scabbard with MOLLE system, which includes a mini pouch with a flammable paracord lanyard for emergencies and a Firesteel for lighting fires, so you're always ready even in the most critical situations.
With ONTOS II, every adventure will be supported by a knife that combines superior performance, functionality and durability, making you feel ready to face any challenge.
Intended Use: Heavy Utility / Hiking
Production Type: Industrial
Country of manufacture: Italy
Blade: N690Co 58HRC stainless steel
Surface Treatment: Burnishing MIL-C-13924 Stone Washed
Handle: Forprene
Blade Length: 167mm.
Blade thickness: 6mm.
Total length: 299mm.
Balance: advanced
Weight: 311g.
Sheath: nylon, MOLLE compatible, with detachable front sheath
Packaging: cardboard box with Extrema Ratio logos.
Notes: includes a firesteel (tinder) and a firecord (flammable paracord thread) for lighting emergency firesER-ON2-EX€364.75Only 1 leftOnly 1 left -
ExtremaRatio - Numen - Black Exp Dark S600 & Black G10 - Heavy Duty Knife
Numen: The Force at Your Side
Discover the Numen survival knife, inspired by the ancient Roman concept of “numen,” an invisible force that guides and protects in decisive moments. Not just a tool, but a powerful and discreet ally, ready to support you in the most extreme situations.Designed in collaboration with Daniele Dal Canto, an AIGS (Italian Association of Survival Guides) guide, Numen is the perfect synthesis of sturdiness, versatility and functionality. Made to face the toughest challenges, this knife will become your silent but determined companion, always ready to respond to your needs.
Unbeatable Ruggedness and Performance
The full tang construction ensures absolute strength and perfect balance, making Numen ideal for a wide range of tasks, including felling, debarking, batoning, chopping and woodworking. The blade, designed for heavy-duty work, is also precise enough for detailed cuts, maintaining outstanding strength even after prolonged use.Ergonomic Handle for Maximum Safety
The ergonomic G10 handle ensures a secure grip in all conditions, even with wet hands or work gloves. Thanks to its comfortable, non-slip shape, you can use Numen with ease and safety in any situation, from hiking to emergencies.Cordura sheath for Maximum Practicality
Each Numen knife comes with a black Cordura sheath, equipped with a M.O.L.L.E.-compatible attachment system, adaptable for both left- and right-handed people. Practical, safe and easy to carry with you at all times.Intended Use: Hiking/Survival
Type of production: Industrial
Country of manufacture: Italy
Blade: full tang, S600 carbon steel at 64HRC
Blade treatment: Black Exp Dark
Handle: G10
Blade length: 210mm.
Blade thickness: 6mm.
Total length: 382mm.
Weight: 632g.
Sheath: cordura, belt-mounted, ambidextrous, M.O.L.L.E. compatible.
Packaging: cardboard box with Extrema Ratio logosER-NUMS600€508.20Only 1 leftOnly 1 left -
ExtremaRatio - Numen - Satin N690Co & Black G10 - Heavy Outdoor Knife
Numen: The Force at Your Side
Discover the Numen survival knife, inspired by the ancient Roman concept of “numen,” an invisible force that guides and protects in decisive moments. Not just a tool, but a powerful and discreet ally, ready to support you in the most extreme situations.Designed in collaboration with Daniele Dal Canto, an AIGS (Italian Association of Survival Guides) guide, Numen is the perfect synthesis of sturdiness, versatility and functionality. Made to face the toughest challenges, this knife will become your silent but determined companion, always ready to respond to your needs.
Unbeatable Ruggedness and Performance
The full tang construction ensures absolute strength and perfect balance, making Numen ideal for a wide range of tasks, including felling, debarking, batoning, chopping and woodworking. The blade, designed for heavy-duty work, is also precise enough for detailed cuts, maintaining outstanding strength even after prolonged use.Ergonomic Handle for Maximum Safety
The ergonomic G10 handle ensures a secure grip in all conditions, even with wet hands or work gloves. Thanks to its comfortable, non-slip shape, you can use Numen with ease and safety in any situation, from hiking to emergencies.Cordura sheath for Maximum Practicality
Each Numen knife comes with a black Cordura sheath, equipped with a M.O.L.L.E.-compatible attachment system, adaptable for both left- and right-handed people. Practical, safe and easy to carry with you at all times.Intended Use: Hiking/Survival
Type of production: Industrial
Country of manufacture: Italy
Blade: full tang, 58HRC Bohler N690Co stainless steel
Blade treatment: Satin finish
Handle: G10
Blade length: 210mm.
Blade thickness: 6mm.
Total length: 382mm.
Weight: 632g.
Sheath: cordura, belt-mounted, ambidextrous, M.O.L.L.E. compatible.
Packaging: cardboard box with Extrema Ratio logos.ER-NUM-SA€444.26Only 1 leftOnly 1 left -
ExtremaRatio - Tuscan - Black N690Co & Green G10 - Knife
Tuscan is a multi-role knife dedicated to Tuscany, a region known for its landscapes, cities of art and strategic military relevance. This knife is designed to adapt to different operational contexts, from tactical military theaters to urban operations, due to its versatility and maneuverability. The full tang blade made of BOHLER N690 steel (58 HRC) is lightened and balanced to facilitate chopping and batoning operations, while the sharpness remains uniform along the entire length. The ergonomic G10 handle allows comfortable use with both standard and reverse grip, with or without gloves. Ambidextrous Cordura sheath with M.O.L.L.E system and thigh strap allows easy carrying on tactical vests and belts. Tuscan is ideal for use in outdoor, survival and bushcraft environments, confirming its versatility in multiple operational situations.
Intended Use: Tactical/MilitaryProduction type: Industrial
Country of production: Italy
Blade: full tang, in Bohler N690Co stainless steel at 58HRC
Blade treatment: Burnishing MIL-C-13924
Handle: G10
Blade length: 167mm.
Blade thickness: 6mm.
Total length: 306mm.
Weight: 437.5g.
Sheath: cordura, belt-mounted, MOLLE compatible
Packaging: cardboard box with Extrema Ratio logos.ER-TUS-GB€337.70Only 2 leftOnly 2 left -
ExtremaRatio - Tuscan Knife - Satin N690Co & Black G10 - Knife
Tuscan is a multi-role knife dedicated to Tuscany, a region known for its landscapes, cities of art and strategic military relevance. This knife is designed to adapt to different operational contexts, from tactical military theaters to urban operations, due to its versatility and maneuverability. The full tang blade made of BOHLER N690 steel (58 HRC) is lightened and balanced to facilitate chopping and batoning operations, while the sharpness remains uniform along the entire length. The ergonomic G10 handle allows comfortable use with both standard and reverse grip, with or without gloves. Ambidextrous Cordura sheath with M.O.L.L.E system and thigh strap allows easy carrying on tactical vests and belts. Tuscan is ideal for use in outdoor, survival and bushcraft environments, confirming its versatility in multiple operational situations.
Intended Use: Tactical/MilitaryProduction type: Industrial
Country of production: Italy
Blade: full tang, in Bohler N690Co stainless steel at 58HRC
Blade treatment: Satin finish
Handle: G10
Blade length: 167mm.
Blade thickness: 6mm.
Total length: 306mm.
Weight: 437.5g.
Sheath: cordura, belt-mounted, MOLLE compatible
Packaging: cardboard box with Extrema Ratio logos.ER-TUS-BS€347.54Only 1 leftOnly 1 left -
ExtremaRatio - Kukri KS - Testudo - coltello
Destinazione d'uso: Tattico/Militare
Lama: in acciaio Inox N690Co 58HRC
Manicatura: Kraton
Lunghezza lama: 245mm.
Spessore della lama: 6mm.
Lunghezza chiuso: -
Lunghezza totale: 375mm.
Bilanciatura: avanzata a 6cm. dal ramo di guardia inferiore
Peso: 450g.
Chiusura: -
Clip: -
Fodero: Tattico, in Nylon
Note: -ER-KUKS€364.75Only 99 leftOnly 99 left -
ExtremaRatio - Nemesis knife - USED - PRIVATE COLLECTION - knife
KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Origin: Withdrawn from a private collection, previously purchased and used.
* Condition: Overall in good condition, knife only, no packaging and paper warranties.
* Commercially available: Discontinued
* Sharpening: Professionally re-sharpened.
* Marks on blade: Normal signs of wear and tear.
* Marks on handle: Several small abrasions on handle and opening pins, hardware slightly discolored
* Box: Not present
* Scabbard: -
* Manuals, Certificates and Warranties: Not present
* Checked and Certified by our in-house laboratory.The Extrema Ratio Nemesis knife is an excellence in the world of tactical tools, designed to deliver superior performance in high-intensity situations. With a strong and versatile blade made of high-quality steel, the Nemesis is ideal for professional use and for those seeking a durable and precise knife. Its ergonomic design and secure grip make it a perfect ally in any environment, from combat to survival, with a focus on durability and handling.
Intended use: tactical/military/backup
Blade: made of N690Co 58HRC stainless steel with burnishing
Handle: made of anticorodal, with 4.5mm thickness
Blade length: 115mm.
Blade thickness: 6mm.
Length closed: 148mm.
Total length: 260mm.
Weight: 235g.
Closure: Back Lock with additional pin safety with both closed and open blade
Clip: burnished stainless steel, removable and reversible
Notes: previously purchased knife from a private collectionER-NEM-USCP€0.00Only 0 leftOnly 0 leftOut of stock -
ExtremaRatio - K1 Dobermann knife - XXV Anniversary - Limited Edition
This special edition in 250 pieces, proposed on the occasion of the 25th anniversary of the brand, maintains the shape of the original, but with materials and finishes corresponding to the current production.
The K1 is equipped with a modified spear point profile blade, characterized by a tip that combines the 40° "tanto" profile with the more traditional European one, creating a sharp but very solid hybrid which, with the false false edge, makes it particularly effective in jab. The bevel is high, allowing for a very effective cutting angle.
The blade is immediately recognizable by the fenestration at the heel, which allows for considerable lightening without compromising its strength. It is made of Böhler N690 steel, with heat treatments that bring its hardness to 58 HRC for the best combination of edge hold and resistance. The finish is satin with flat grinding.
The handle, in anodized Anticorodal alloy, compared to the original presents the lightening on the sides that make the Extrema Ratio knives immediately distinguishable, but maintains the arched shape and the lateral "bellies" of the K1, offering an excellent grip both in the "saber" than in the "reverse" grip.
The terminal part of the handle curves to form a sort of hook which allows particularly easy and rapid extraction from the scabbard, while the tang protrudes from it with a triangular cusp which acts as a glass breaker with a slot which allows the knife to be equipped of lasso.
The leather scabbard faithfully reproduces the original while maintaining both the qualities of ease and speed of extraction. The carry can take place in an upside-down axillary position, horizontally on the belt or tactically on the thigh.
The K1 equipment is completed with a polypropylene case , complete leather sheath and underarm shoulder strap.
WEIGHT g.: 493
WEIGHT OZ.: 17.39
BLADE LENGTH (MM): 210
BLADE LENGTH (IN): 8.26
TOTAL LENGTH (MM): 351
TOTAL LENGTH (IN): 13.81
BLADE THICKNESS (MM): 6.3
BLADE THICKNESS (IN): 0.25
BLADE MATERIAL: BÖHLER N690 STEEL (58HRC)
BLADE FINISH: SATIN
BLADE GRINDING: FLAT EDGE
HANDLE MATERIAL: ANODIZED ANTICORODAL ALUMINUMER-K1-D-LE€0.00Only 0 leftOnly 0 leftOut of stock -
Extremaratio - Fulcrum II D Folder - Black - Drop Point - knife
Intended use: tactical / military / backup
Blade: stainless steel N690Co 58HRC
Handle: Anticorodal 4.5mm thick
Blade length: 95mm.
Blade thickness: 6mm.
Length closed: 127
Total length: 220mm.
Balancing: -
Weight: 200g.
Closure: Back Lock
Clip: removable and reversible in stainless steel
Sheath: -4145€0.00Only 0 leftOnly 0 leftOut of stock -
Extremaratio - Fulcrum II T Black - Tanto - knife
Directly derived from military specifications, this fold has been developed to replace a fixed blade in use.
To achieve this result, very strong materials, high thicknesses and a solid and safe opening and closing system were used: the back lock.
The knife is equipped with a manual safety device which confers maximum safety in use and reduces the risk of accidental closure in manieradrastica.
The safety device, if inserted in closing, prevents the knife from being turned against itself in the case of subtraction.Materials and workmanship:
All parts of the knife are machined from high-precision CNC machines, while assembly, adjustment and sharpening are carried out by hand.
The blade is made of cobalt N690 stainless steel, a steel with very high resistance to mechanical stress, cutting capacity, thread strength and corrosion resistance. The grinding is flat and the hardness is 58HRC.
The grips of the handle are in Anticorodal, an aluminum alega with high resistance to mechanical stress and oxidation.
The tang, in hardened N690, is an effective emergency crystals. All screws, pins and clips are in burnished stainless steel. The blade, the lever and the shank are covered with Testudo treatment, very resistant to abrasion and oxidation. The cheeks are black anodized.Intended use: tactical / military / backup
Blade: stainless steel N690Co 58HRC
Handle: Anticorodal thickness 4.5mm
Blade length: 95mm.
Blade thickness: 6mm.
Length closed: 127
Total length: 220mm.
Weight: 200g.
Closure: Back Lock
Clip: removable and reversible in stainless steel
Notes: safety mechanism both in opening and closing4146R€0.00Only 0 leftOnly 0 leftOut of stock -
Extremaratio - Fulcrum II D Folder Desert Warfare - Tanto - knife
Intended use: tactical / military / backup
Blade: Stainless Steel N690Co 58HRC Desert Warfare
Manicure: 4.5mm Thickness Anticorodal
Blade Length: 95mm.
Blade thickness: 6mm.
Closed length: 127
Total length: 220mm.
Balance: -
Weight: 200g.
Closing: Back Lock
Clip: Removable and reversible in stainless steel
Sheath: -
Notes: safety mechanism both in opening and closing4146D€0.00Only 0 leftOnly 0 leftOut of stock -
ExtremaRatio - Nemesis - Black Folding Knife - coltello
Chiudibili Extrema Ratio:
Direttamente derivato da specifiche militari,questo apribile è stato sviluppato per sostituirenell'impiego un lama fissa.
Per raggiungere questo risultato sono stati impiegatimateriali robustissimi, alti spessori ed un sistema diapertura/chiusura solido e sicuro: il back lock.
Il coltello è dotato di sicura manuale che conferisce massima sicurezza nell'impiego e riduce in manieradrastica il rischio di chiusure accidentali.
La sicura, se inserita in chiusura, evita agli operatorimilitari o di polizia che nel caso di sottrazione il coltello possa essere rivolto contro di loro.
Materiali e lavorazioni:
Tutte le parti del coltello sono ricavate dal pieno da macchine a controllo numerico ad alta precisione mentre l'assemblaggio, l'aggiustaggio e l'affilatura sono condotte artigianalmente.
La lama è in acciaio inossidabile al cobalto N690,un acciaio dalle elevatissime caratteristiche di resistenza alle sollecitazioni meccaniche, capacità ditaglio, tenuta del filo e resistenza alla corrosione.L'arrotatura è piana e la durezza è di 58HRC.
Le guancette dell'impugnatura sono in Anticorodal, unalega di alluminio con elevate doti di resistenza alle sollecitazioni meccaniche ed all'ossidazione.
Il codolo, in N690 temprato, è un efficace frangi cristalli d'emergenza. Tutta la viteria, i perni e laclip sono in acciaio inox brunito. La lama, la leva edil codolo sono ricoperti con trattamento Testudo,molto resistente all'abrasione ed all'ossidazione.Le guancette sono anodizzate nere.
Destinazione d'uso: tattico/militare/backup
Lama: in acciaio Inox N690Co 58HRC
Manicatura: Anticorodal spessore 4.5mm
Lunghezza lama: 115mm.
Spessore della lama: 6mm.
Lunghezza chiuso: 148
Lunghezza totale: 260mm.
Bilanciatura: -
Peso: 235g.
Chiusura: Back Lock
Clip: amovibile e reversibile in acciaio inox
Fodero: -
Note: fermo di sicurezza sia in apertura che in chiusuraER-NEMESIS€0.00Only 0 leftOnly 0 leftOut of stock -
ExtremaRatio - Kukri KH - Geocamo - coltello
Destinazione d'uso: Tattico/Militare
Lama: in acciaio Inox N690Co 58HRC
Manicatura: Kraton
Lunghezza lama: 345mm.
Spessore della lama: 6mm.
Lunghezza chiuso: -
Lunghezza totale: 475mm.
Bilanciatura: avanzata a 10cm. dal ramo di guardia inferiore
Peso: 585g.
Chiusura: -
Clip: -
Fodero: Tattico, in Nylon
Note: -4189€0.00Only 0 leftOnly 0 leftOut of stock
Sports, Outdoor, Tactical, and Collectible Knives: The Collini Selection
For over 50 years, Coltelleria Collini has been a reference point in Italy for the world of specialized cutlery. Since 1968, we have been selecting sports, outdoor, professional, and collectible knives, collaborating exclusively with official brands, historical manufacturers, and master artisans.
In this category, you will find thousands of original knives, chosen for demanding collectors, EDC, outdoor, and bushcraft enthusiasts, as well as professional operators who require reliability, quality materials, and consistent performance over time.
Military & Tactical Knives
Knives designed for heavy-duty and professional use, where robustness and reliability are paramount. We select world-leading brands such as Extrema Ratio, Zero Tolerance, Ka-Bar, and Cold Steel. Fixed and folding blades developed to withstand extreme conditions.
Sports & Outdoor Knives
From trekking to hiking, from bushcraft to everyday carry (EDC). Discover the Italian excellence of Fox Knives and LionSteel, the Nordic solidity of Fallkniven, and great classics like Opinel and Spyderco.
Collectible & Rare Knives
Custom, vintage, limited edition, and discontinued knives. Through our Approved program, we acquire, evaluate, and certify private collections, offering our customers access to rare, display, and investment-grade blades.
Why choose Coltelleria Collini since 1968
We are not just an e-commerce site, but a historic cutlery shop with direct experience on the products we offer. Buying from us guarantees:
- Certified Originality: we are official dealers for all brands we carry.
- Real Stock with fast shipping.
- Qualified Assistance and technical advice before and after sales.
Knives FAQ
There is no absolute "best" brand, but specific leaders for each use. For tactical and professional use, Extrema Ratio and Zero Tolerance are top tier. For outdoor and EDC, Fox, LionSteel, Fallkniven, and Spyderco excel.
Yes, buying sports and collectible knives online is generally legal for adults. However, laws regarding carrying and transporting knives in public vary significantly by country. Always check your local regulations.