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This version of the Extrema Ratio Resolza is a more compact version. The Resolza S has a decreased length and has a lighter weight.

However, the inspiration is the same for this version as it was for the full-sized Extrema Ratio Resolza. The traditional Resolza was first produced in Sardinia and dates back to the mid-nineteenth century. (Sardinia is Italy's second largest island.) The Resolza was used by the island farmers and shepherds for numerous daily activities. Not only was it a necessary utility knife but these knives were carried by the owners when they were called to war.

The Resolza S has the classic design and the elegant blade that is standard on the larger version. Extrema Ratio uses modern materials and modern technologies to update this mid-nineteenth century Sardinia blade. The smaller dimensions make it ideal for an exceptional EDC in areas where legal knife blade lengths are shorter. Slips easily into your pocket for a very discreet carry.

The Resolza S is a modernized version of one of the “most famous traditional knives” of Italy. Made by Extrema Ratio using excellent materials and excellent craftsmanship.


Extrema Ratio has retained the unique blade style of the original Resolza. In following the traditional design, it does not have the thumb studs you commonly find on other Extrema Ratio folders. This model has a black handle and a black blade.


The Resolza S has a shaped handle that is entirely different from the handles Extrema Ratio normally designs for its folders. It has a slender handle with inserts to give you a better grip. In following the original Resolza Sardinia design, the folder does not have a clip.


The Resolza has a liner lock.

Total Length of Knife: mm 171.45 (6.75 inches)

Length of Closed Knife: mm 95.00 (3.74 inches)

Blade Length Total: mm 76.20 (3.00 inches)

Blade Length Sharpened Section: mm 69.09 (2.72 inches)

Handle Length: mm 95.00 (3.74 inches)

Weight of Knife: g 36.85 (1.30 ounces)

Blade Thickness (Widest Part): mm 3.05 (.12 inches)

Blade Width (Widest Section): mm 14.99 (.59 inches)

Closed Knife Thickness: mm 11.94 (.47 inches)

Blade Steel: Bohler N690 cobalt stainless steel*

Blade Hardness: Rockwell 58 HRC

Grinding: Flat grind

Serrations on Blade: No

Lock: Liner Lock

Handle Material: Anodized anticorodal aluminum alloy **

Belt Clip: No

Window Breaker: No


* The blade is made with N690 cobalt stainless steel; a high performance steel with excellent cutting and sharpening characteristics. This steel is also used in the butchering industry and to make surgical instruments.

** The handle is made of black anodized anticorodal aluminum, an aluminum alloy that is very strong and corrosion resistant.

Availability: Usually ships in 2-3 business days

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