Demko Nano Shark Knife Black G10, Stonewashed CPM 20CV by Andrew Demko (AD-NANO-G10BLK-20CV)
- Nano Shark Black G10, Stonewashed CPM 20CV the smallest folder in the Shark family designed for heavy-duty work. Designed by Cold Steel's long-time designer Andrew Demko. Its Shark-Lock™ is considered the strongest in the world!

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.
Nano Shark Black G10, Stonewashed CPM 20CV, the result of many years of work and experience of Andrew Demko, a long-time designer at Cold Steel. The smallest of the Shark family, designed for the toughest jobs, a real tool despite its size, characterized not only by its robustness and power, but also by its unique design. Ergonomic handle made of G10 composite and blade made of CPM 20CV steel, one of the best powder steels currently used in knives. One of the most important elements of a knife is its lock. Shark-Lock™ is an innovative mechanism that is considered one of the strongest in the world. Thanks to it, the knife is not only safe to use, but also ensures that it will handle even the most difficult tasks. It is a unique example of a compact EDC (Every Day Carry) knife, an excellent choice for anyone looking for a reliable everyday tool.
Andrew Demko, owner and founder of Demko Knives, first began forging chisels in 1988, when he was in seventh grade. He immediately realized that this was his passion and almost immediately began forging knives. Like many blacksmiths, Andrew began his journey in a garage, grinding the shapes of the blades and sharpening them on a small grinder. Andrew's passion for engineering and attention to detail were noticed by the well-known company Cold Steel. At Cold Steel, Andrew developed some of the most innovative and strongest locking mechanisms in the industry. The legendary Tri-Ad Lock, Scorpion Lock, and recently the dream of one-handed operators - the Shark-Lock.
CPM 20CV - one of the best tool steels, American premium martensitic stainless steel. Produced by US Crucible Industries using the Crucible® Particle Metallurgy (CPM) method. The CPM process produces a very homogeneous, high-quality steel with excellent dimensional stability, grindability and toughness compared to steels produced by conventional methods. Designed to provide better wear resistance while maintaining the highest level of corrosion resistance. This super steel is comparable to Böhler's M390 or Carpenter's CTS-204P. According to some knife manufacturers, 20CV is the best of these three steels in terms of edge retention. It consists of 1.9% carbon (C), 20.0% chromium (Cr), 4.0% vanadium (V), 1.0% molybdenum (Mo) and 0.6% tungsten (W). The high percentage of chromium with a little molybdenum makes 20CV one of the best high-grade corrosion-resistant steels.
The Shark-Lock™ mechanism on the back of the knife is operated with a ramp-like “fin”. When the blade is opened, the spring-loaded locking arm moves up and then into the notch in the pin, placing it under the locking pin. What is unique is that the locking mechanism moves back and forth while also moving up and down. This allows for an increase in the size of the surface in contact with the blade, ensuring better mechanical strength in a specific area. And because the drive spring, which moves the locking element up to the locked position, is located in the locking arm itself, it will not be exposed to dirt and debris.
Blade - Shark Foot type, finished with a Stonewashed coating to hide scratches caused by use. The thickness of the blade ensures high durability, while the high, flat grind gives excellent cutting edge geometry and extreme cutting performance. Ball bearings assist the blade opening via the thumb hole. The whole is locked with the Shark-Lock™, considered to be the strongest locking mechanism in the world.
Handle grips made of G10, a virtually indestructible plastic material resistant to weather conditions, chemicals and mechanical damage. The beveled edges of the covers eliminate sharp edges and the characteristic surface texture improves grip. The two-position (right/left) clip allows the knife to be carried in the tip-up position with the tip of the blade facing upwards.
Technical data:
Product number: AD-NANO-G10BLK-20CV
Product name: Nano Shark Black G10, Stonewashed CPM 20CV
Overall length: 149.0 mm / 5.875″
Blade length: 54.0 mm / 2.125″
Blade thickness: 3.4 mm / 0.13”
Handle length: 95.2 mm / 3.75″
Handle thickness: 12.2 mm / 0.48”
Weight: 102.0 g / 3.6 oz
Blade material: CPM 20CV
Blade hardness: n/a
Blade grinding: Flat
Blade finish: Stonewash
Handle material: G10
Handle finish color: Black
Backspacer material: Stainless Steel
Backspacer color: Gray
Clip: Right / Left, Tip-Up
Clip material: Stainless Steel
Pivot mechanism: Ball Bearing
Locking mechanism: Shark-Lock™
Opening type: Manual, thumb hole
Additional accessories: None
Designer: Andrew Demko
Brand: Demko
Manufacturer: Demko Knives
Country of origin: Taiwan
Developed by: Sharg® company