Cold Steel SPARTAN 21ST Folding Knife
The Cold Steel Spartan 21ST is an uncompromising folding knife for those who want strength, safety, and maximum cutting performance. This is not a subtle EDC — it is a tool built for hard work that bites into material without hesitation.
Spartan – when you need a knife that will not stop.
Detailed product description
Cold Steel SPARTAN 21ST Folding Knife
As soon as you open the massive blade using the characteristic Demko thumb plate and lock it with the legendary Tri‑Ad Lock, you immediately feel the uncompromising strength, stability, and aggressive cutting performance offered by the Cold Steel Spartan 21ST. This folding knife combines inspiration from ancient fighting blades with modern Cold Steel construction, creating a tool designed for hard use, outdoor tasks, and demanding everyday work.
The Spartan model is intended for users who want a large, extremely durable, and powerful folding knife that is not intimidated by heavy cutting or harsh conditions.
The brand is known for extreme testing, an emphasis on safety, and the development of its own locking mechanisms. The Spartan is a typical representative of the Cold Steel philosophy — maximum strength, functionality, and durability without compromise.
Cold Steel Spartan 21ST model
Type Folding knife
Key parameters
Overall length
cca 26,7 cm
Blade length
cca 11,4 cm
Weight
cca 255 g
Clip
ambidextrous, tip‑up
Steel
AUS‑10A
Opening
Demko thumb plate
Handle
Griv‑Ex™ s ocelovými vložkami
Blade thickness
cca 4 mm
Blade finish
stonewash
Blade shape
Kukri / Kopis
Grind
Hollow / Recurve
Production
Taiwan
Lock
Tri‑Ad Lock
About Cold Steel
Cold Steel is one of the legends of the knife world.
Character and philosophy
The Cold Steel Spartan 21ST is a knife that does not try to be discreet. Its distinctive kukri / kopis-style blade is designed for maximum cutting effect, chopping power, and penetration. The blade curvature transfers cutting energy exactly where you need it most, making this knife an extremely effective working tool.
The AUS‑10A steel used offers a very good balance of toughness, corrosion resistance, and easy maintenance. The Griv‑Ex™ polymer handle with steel liners is shaped for a secure grip even during heavy use and works well with gloves and in wet conditions.
The dominant feature of the design is the Tri‑Ad Lock, considered one of the strongest locking mechanisms among folding knives. Simply put, the Spartan is designed as a working tool, not a display piece.
Key benefits
- Extremely strong Tri‑Ad Lock
- Aggressive kukri shape with high cutting performance
- Durable AUS‑10A steel with good corrosion resistance
- Secure grip even during heavy use
- Fast and reliable one-handed opening
- Construction built for hard use
Possible limitations
- Its large size and weight are not ideal for discreet EDC
- The kukri profile is not suitable for fine cutting tasks
- May be legally problematic in some areas
Maintenance and care
Clean and dry the blade after use, especially after contact with moisture. Regularly check the cleanliness of the lock and opening mechanism. Maintain the edge with regular light sharpening to preserve maximum performance.
To maintain optimal sharpness, we recommend the Spyderco Tri‑Angle Sharpmaker Complete Sharpening System 204MF – ideal for plain edges as well. 🛒 Available on our Moskito.cz website.
Recommended for
- outdoor and survival use
- users who want maximum strength
- heavy-duty work and power cuts
- fans of bold and aggressive design
- tactical and expedition gear
Final verdict
The Cold Steel Spartan 21ST is an uncompromising folding knife for those who want strength, safety, and maximum cutting performance. This is not a subtle EDC — it is a tool built for hard work that bites into material without hesitation.
Spartan – when you need a knife that will not stop.
Customer reviews
All 147 reviews →4,8
★★★★★
147 reviews · Heureka verified
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