- N.K.3 K SW neck knife with a fixed blade and a handle ending with a ring. On both sides of the blood-graining slot, grooves in the blood. Vagina adapted to hanging on the neck, optional on a vest or belt, which allows the use of a knife as a clinch pick.

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.
N. K.3 K Stone Washed, Neck Knife with a fixed blade and a handle with a back ring. Sheath adapted to hanging on the neck, optional on a waistcoat or waist. An exquisite knife with impressive cutting efficiency, used for self-defense as well as for small work.
N. K. 3 K good lies in the hand, it enables effective deep cuts. The undercut on the spine ramp / spine is designed to facilitate the support of the thumb or index finger. In expert hands this knife is incredibly fast - N. K. 3 K is a professional tool.
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 - massive, 6.3 mm thickness with Tanto profile. On both sides of the blade - blood grooves. The blade is covered with a mate, non-reflective Stone Washed coating. Smooth blade (Plain type) was made with a flat cut (Flat grind), which maintains high sharpness of the cutting edge and penetration ability regardless of the intensity of wear.
Handle - with a perfect design, made of Austrian Böhler-Uddeholm's N690Co stainless steel. The arched shape of the grip prevents accidental injuries during use. A protrusion on the top of the handle, so-called „Top Hammer” replaces a hammer or glass breaker.
Sheath - made of Kydex material allows you to quickly get a knife in every situation. Includes a rope made of paracord to hang the sheath with a knife on the neck. The sheath can also be attached in conjunction with the optional Extrema Ratio accessories: under-tapes the M.O.L.L.E system. or on a belt which allows you to use N.K. 3 K as clinch pick (short knife for final defense in clinch). Clinch Pick knife, tool ideal for self-defense also from a sitting position, for example on a bench.
Fasteners - optional Extrema Ratio accessories allows you to adjust the transfer method to your needs. BELT-CLIP (fastening the sheath to the belt), UNDER SHIRT SYSTEM (fastening for conveying).
Technical specification:
Product number: 04.1000.0213/DW
Name: NK3K Stone Washed
Length of the blade: 70.0 mm / 2.75”
Thickness of the blade: 6.3 mm / 0.25"
Overall length: 172.0 mm / 6.77”
Weight: 95.0 g / 3.35 oz
Blade material: N690
Blade hardness: 58 HRC
Blade grind: Flat
Blade finish: Stonewashed
Handle type: Böhler N690 Steel
Sheath: Kydex
Designer: Extrema Ratio
Brand: Extrema Ratio
Manufacturer: Extrema Ratio, Italy
Country of origin: Italy
Created by: Sharg® Company