- Satre Expeditons Dark Stone is an exquisitely designed neck knife produced by Extrema Ratio. Responsible for the design is Daniele Dal Canto, one of the chief instructors at F.I.S.S.S. (Italian Federation of Sports and Experimental Survival)

This product is intended for use only by adults with knowledge and experience in handling sharp cutting tools. Improper use of the knife can result in serious injuries. The blade is extremely sharp and can easily cut through skin and tissue; therefore, extra caution should always be exercised while cutting, and hands should be kept away from the cutting edge. To prevent the knife from slipping, it is recommended to cut on a stable, non-slip surface and avoid excessive force, which may cause uncontrolled blade movement.
Leaving the knife on the edge of a table, countertop, or in easily accessible places—especially where children are present—poses a significant safety risk. The knife should always be properly secured after use, ideally by placing it on a stable surface or storing it in designated knife blocks, protective sheaths, or magnetic strips. The knife should never be used for tasks it is not designed for, such as opening cans or prying objects, as this can damage the tool and lead to dangerous accidents.
A dull blade increases the risk of injury, as it requires more force and is more likely to slip from the material being cut. Therefore, it is essential to sharpen the knife regularly to maintain optimal sharpness. Additionally, proper cleaning and drying of the knife are necessary to prevent corrosion and bacterial growth. Periodic inspection of the handle and blade is recommended to check for cracks, chips, or looseness. If any damage is detected, the knife should be repaired or replaced immediately.
When using the knife, focus solely on the task at hand—avoid talking on the phone, watching television, or other distractions while cutting. Ensure proper lighting in the workspace for better visibility and control. Please note that some countries or regions have laws restricting the ownership and carrying of knives. Before purchasing or using this knife, verify that its use is legal in your location according to applicable regulations.
Following these safety guidelines will help ensure safe and effective knife use, minimizing the risk of accidents and extending the lifespan of the tool.
Satre Expeditons Dark Stone, a lightweight and extremely durable compact fixed blade knife made with a scabbard suitable for hanging around the neck, on a vest or optionally on a belt. The goal was to create a handy but reliable knife with low weight for any outdoor use, such as survival, bushcraft or as a piece of EDC equipment. Collaboration with Daniele Dal Canto, a professional instructor of survival techniques with the title of Master Advancet in F.I.S.S.S. (Italian Federation of Sports and Experimental Survival) resulted in a perfectly designed and crafted handy outdoor knife.
Despite its compact size, it fits securely in the hand and enables effective deep cuts. The arched undercut, on the back of the blade ramp / spine is designed to make it easy to rest your thumb or index finger according to your preferred working technique. A tool for the professional and beyond.
Expedition Series is the new range of tools dedicated to professional explorers. The Expedition Series knives offer the same reliability and high quality as any other Extrema Ratio tactical tool provided to the military special forces and law enforcement.
N690 - corrosion-resistant, high-carbon 1.07% (C), martensitic chromium steel 17.30% (Cr) with the addition of molybdenum 1.10% (Mo), vanadium 0.10% (V) and cobalt 1.50% (Co) for structural uniformity. Features exceptionally high corrosion resistance and long edge retention. One of the best tool steels in the world today. Achieves a hardness of 58 HRC. Manufactured by Böhler Edelstahl in Kapfenberg, Austria.
Blade - sharp and solid with a thickness of 5 mm. Drop point with cutting edge for extreme cutting performance. The blade was derived smooth plain blade grind (Flat grind). For additional protection against corrosion, the steel is covered with a chemically polished, non-reflective MIL-C-13924 BURNISHING coating and a stone washed surface treatment - Dark Stone finish.
Handle - ergonomic, made of Austrian Böhler-Uddeholm's N690 stainless steel. The profiled shape of the handle prevents accidental injury during use. Enlarged hole (lanyard hole) for pulling a lanyard or cord.
Sheath - made of Kydex plastic, allows quick retrieval of the knife in any situation. Included paracord rope for hanging the knife case around the neck. The holster can also be attached under the straps of the M.O.L.L.E. system: to a tactical vest or any Extrema Ratio nylon holster. In addition, in combination with optional accessories, it can be attached to a belt. Additional kydex for a flint (included). You can see in this design years of designer experience exquisitely executed by Extrema Ratio.
Technical data:
Product number: 04.1000.0222/EXP
Name: Satre Expeditons Dark Stone
Overall length: 163.0 mm / 6.42"
Blade length: 70.0 mm / 2.75"
Handle length: 93.0 mm / 3.66"
Thickness of blade: 5.0 mm / 0.19"
Handle thickness: 5.0 mm / 0.19"
Weight: 78.0 g / 2.75 oz
Blade material: Böhler N690
Blade hardness: 58 HRC
Blade grind: Flat
Blade finish: Dark Stone
Handle material: N690
Handle finish color: Dark Stone
Sheath (holster): Kydex
Additional accessories: Firesteel
Designer: Daniele Dal Canto
Brand name: Extrema Ratio
Manufacturer: Extrema Ratio, Italy
Country of origin: Italy
Developed by Sharg® company.