Extrema Ratio Ontos II Expeditions Knife Desert Forprene, Dark Stonewashed MIL-C N690 (04.1000.0122/EXP)
- Ontos II Expeditions Desert Forprene, Dark Stonewashed MIL-C, strong and durable compact survival knife. Blade made of Böhler N690 steel, comfortable handle made of Forprene plastic, ensuring a secure grip in all conditions. A reliable tool!

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.
Ontos II Expeditions Desert Forprene, Dark Stonewashed MIL-C is a reliable survival knife designed for demanding outdoor expeditions. The blade made of high-quality Böhler N690 steel is characterized by its exceptional corrosion resistance and long-lasting sharpness. The ergonomic handle made of Forprene plastic guarantees a firm grip even with wet hands or at low temperatures. Its textured surface improves control of the tool, enabling precise operation in extreme conditions. The cordura sheath has a small pocket with a paracord cord and a flint. Its robust design and compact dimensions make it the perfect choice for professionals and survival enthusiasts. It is ideal for both precise tasks and heavy field work.
The Expedition series is a new range of tools designed for professional explorers. The knives in this series offer the same performance, reliability and high quality as all the tactical tools that Extrema Ratio supplies to special forces and law enforcement agencies.
N690 - corrosion-resistant, high-carbon 1.07% (C), martensitic chromium steel 17.30% (Cr) with added molybdenum 1.10% (Mo), vanadium 0.10% (V) and cobalt 1.50% (Co) for structural homogeneity. It is characterized by exceptionally high corrosion resistance and long edge retention. One of the best tool steels in the world today. It reaches a hardness of 57-60 HRC. Manufactured by Böhler Edelstahl in Kapfenberg, Austria.
Blade: classic drop point, thickness 6.0 mm. The blade has a stonewashed finish to hide minor scratches caused by use, and is then coated with MIL-C-13924. The blade is plain with a flat grind. The high belly of the cutting edge significantly increases its length in relation to the length of the blade. The false edge increases the penetrating properties, and the flat part of the spine can be used for chopping.
Handle - full-size FH (Full Handle) type used in Extrema Ratio assault knives. Non-slip grips with rubber-like properties, made of thermoplastic elastomer Forprene (flexible return, soft, resistant to chemicals), guarantee a secure grip even with wet hands. Steel pommel with an enlarged oval hole (lanyard hole) for attaching a leash or safety line, can be used as a hammer / window breaker.
Sheath - made of cordura. Can be attached to a belt or M.O.L.L.E. system-equipped equipment. In a small pocket, you will find a fire starter and a paracord with a flammable core, which will allow you to light a fire in difficult conditions. You can see in this construction years of experience of designers, perfectly made by Extrema Ratio.
Technical data:
Product number: 04.1000.0122/EXP
Name: Ontos II Expeditions Desert Forprene, Dark Stonewashed MIL-C,
Overall length: 299.0 mm / 11.77”
Blade length: 167.0 mm / 6.57”
Blade thickness: 6.0 mm / 0.23”
Handle length: n/a
Handle thickness: n/a
Weight: 311.0 g / 10.97 oz
Blade material: Böhler N690
Blade hardness: 58 HRC
Blade grinding: Flat
Blade finish: Dark Stonewashed with MIL-C-13924 coating
Handle material: Forprene
Handle finish color: Desert
Sheath (holster): Cordura
Additional accessories: Flint, paracord
Designer: Extrema Ratio
Brand: Extrema Ratio
Manufacturer: Extrema Ratio, Italy
Country of origin: Italy
Development: Sharg® company