Karsumba R

Introducing the Limited Edition Karsumba R our version of the traditional Karambit knife featuring a curved blade and standard ring for ease of drawing and utility.
Our dedication to quality and precision means your blade is BUILT TO ORDER. Please allow our small team ten-twelve business days to complete your fixed blade, and fifteen-twenty days for folding blades.

Introducing the Limited Edition Karsumba R, our version of the traditional Karambit knife featuring a curved blade and standard ring for ease of drawing and utility.

The Karsumba R is a traditional take on the karambit fighting knife. The addition of the handle ring allows for increased retention in knife fighting scenarios. Though original Karambit knives were much longer and originally intended for farming practices, the shortened fighting version has proven beneficial in the biomechanics of the blade allowing for stronger and more lethal cutting strokes. The karambit fighting knife is the perfect blade for self defense and tactical applications. 

This blade is precision ground out of CPM 154 steel, giving it the desirable toughness and edge retention Toor Knives has become known for, and is strikingly lethal. CPM 154 is known for its corrosion resistance and edge retention which is supported by the Toor Knives heat treatment process, leaving this blade right at about 60 Rockwell hard. This blade sits at a little over 6.5” overall and is the perfect concealable self-defense blade.

Each one is made here in San Diego, CA by our skilled manufacturing team and comes with a KYDEX® sheath.

Overall Length 6.625"
Blade Length 2.5"
Handle Length 4.125"
Handle Material
G10  or Carbon Fiber
Steel CPM 154
Blade Thickness 0.1875"
Blade Hardness 59-61 Rockwell
Weight 5.5 oz

About this blade


Blades and tools associated with this symbol are designed specifically for clandestine and concealable applications. Whether it's a night out on the town or a casual weekend with the family, this designation will ensure your blade is always carried out of sight.


These blades and tools have been developed for a tactical or military application, where gear real estate is valuable and overall weight is critical. If you're in need of a tough blade, sheath, tool, and mounting option that are always mission ready, then this is the designator to look for.

Made in the USA
Every blade & tool is made right here in San Diego, CA
Veteran Owned
Founded & built by those who proudly served.
100% Made in the USA

SOF Series

The foundation of Toor Knives. The blades in the SOF series allow you to always be mission-ready. The tactical blades were designed for special operations forces in-mind, and they're relied upon by the world's elite operators to get the job done.

Fixed Blade

Fixed blades are a superior choice for knife enthusiasts, featuring blades permanently affixed to the handle for unparalleled strength and durability. Whether for survival, outdoor adventures, or tactical operations, these knives excel in reliability and are trusted by professionals worldwide.