EXTREMA RATIO
FULCRUM FULL SIZE BLACK - known for its strength, reliability, and versatility
FULCRUM FULL SIZE BLACK - known for its strength, reliability, and versatility
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FREE shipping to USA and Military Addresses
**GENEROUS ADDITIONAL DISCOUNT WHEN YOU PAY WITH A US POSTAL MONEY ORDER OR A CHECK**
Please email us at customerservice@xtremeknives.com or call us at 800-470-9414 or 801-770-4466 for more information. This option is available only for USA customers and not available on our website.
ABOUT
The Extrema Ratio FULCRUM is a full-sized, heavy-duty fixed blade designed to excel in a wide range of demanding environments. Originally developed through a collaboration with COMALP (Alpine Troops Command) as part of an experimental project for Italian infantry equipment, this knife quickly earned a reputation for its strength, reliability, and versatility. Extensively tested and proven in real-world missions—including deployment in Afghanistan with the Italian "Nibbio" forces—the FULCRUM has become known as “the King of the Fulcrums.” Whether you're camping, hunting, or working in the field, this multipurpose knife delivers consistent, battle-ready performance. Built for hard use, it can take on tasks that would challenge lesser blades, making it a trusted tool for both professionals and serious outdoor users
BLADE
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Full-sized tanto-style blade engineered for strength and penetration
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Can withstand extreme stress—tested to sustain loads over 150 kg (300+ lbs) without breaking
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Double guard protects your hand
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Top-heavy balance plus its weight adds chopping and batoning capability
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Exceptionally strong tip holds up to repeated impact and piercing tasks
HANDLE
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The Forprene handle is designed for control and durability
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Full tang extends past the handle with integrated lanyard hole
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Ergonomic shape allows for secure handling
SHEATH
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Dual-sheath system: outer reinforced nylon sheath with leg strap, and inner hard nylon composite sheath
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Internal retention system keeps the knife securely in place
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MOLLE compatible for versatile carry
Total Length of Knife: mm 310 (12.20 inches)
Blade Length: mm 180 (7.09 inches)
Total Length of Knife and Sheath: mm 346.08 (13.63 inches)
Weight of Knife: g 320.35 (11.30 ounces)
Weight of Knife and Sheath: g 586.84 (1 pound 4.7 ounces)
Blade Thickness (Widest Part): mm 6.35 (0.25 inches)
Blade Width (Widest Section): mm 32.18 (1.27 inches)
Blade Steel: Bohler N690 cobalt stainless steel*
Blade Hardness: Rockwell 58 HRC
Grinding: Flat grind
Serrations on Blade: Partially serrated blade
Handle: Forprene**
Handle Length: mm 123.83 (4.88 inches)
Sheath: MOLLE Compatible Sheath
ADDITIONAL INFORMATION
* The blade is made with N690 cobalt stainless steel; a high performance steel with excellent cutting and sharpening characteristics. This steel is also used in the butchering industry and to make surgical instruments.
** Forprene has extreme temperature and moisture resistance.
NOTE: Most Extrema Ratio knives are designed for many purposes except for use with food. While they are known for their versatility, durability and strength, they are not ideal for using with food. For food purposes, it's recommended to use knives specially designed for the task.



