ケルベロス

K4S brand original knife design by Wampire

When closed this knife is an Impact Kerambit Tool ideal for self-defense.

***CONCEPT***
This knife is based from the 1918 trench knife, which is a dagger with a skull crusher and brass knuckles. The trench knife is totally offensive made for combat. I basically thought to myself, if I made everything as legal as possible what would the knife look like?
Smaller folding knife instead of a large fixed knife, Tanto blade instead of dagger, Impact Kerambit instead of brass knuckles, pointy areas instead of a skull crusher.
So instead of blood & guts combat, this is designed for protection in a modern urban setting.

***BLADE***
I know what your thinking, a Kerambit should have a curved hawk's bill blade.
The handle is totally straight because a straight handle provides the most number of grip options, that's important to me because I believe that in a crisis situation sometimes you just have to grab the knife and use it in whatever grip you end up with and pray that your knife works well that way.
The tanto shaped blade was chosen over the hawk's bill blade because it has a stronger tip and hey it can be used to pierce armor. But seriously the tanto is just a good blade shape for many types of fighting tactics.
The point is closer to the spine of the blade so you can even do a backhand attack with the spine.

***HANDLE***
The Karambit ring hole can be used as a hex wrench, imo the hex hole provides more control than a circle hole when spinning the knife.

A "three in one" multi-tool.
1) Folding Knife
2) Impact Kerambit
3) Hex Wrench

SPECS
-Tanto shaped blade
-Karambit ring
-Lock back
-No pins, all screws, taking apart friendly
-Thorn for ambidextrous thumb opening
-Ricasso claw (aggressive finger guard)
-Lanyard hole and secondary lanyard hole
-Aggressive jimping on spine of blade
-Hex wrench
-Glass breaker on head of handle
-Glass breaker on the Karambit ring
-Chisel grind
-Pocket clip (not shown)
-Self-defense pocket stick with 3 points of striking
-Impact Karambit tool when closed

***USAGE***
1) In the closed position this knife is an impact Karambit tool that is basically a pocket stick on steroids.
2) In the open position this knife is very versatile in grip and cutting choirs suitable for EDC and self-defense.