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**GENEROUS ADDITIONAL DISCOUNT WHEN YOU PAY WITH A US POSTAL MONEY ORDER OR A CHECK** Please email us at or call us at 800-470-9414 or 801-770-4466 for more information. This option is available only for USA customers and not available on our website.


1908. Bad year for knives in Italy. Due to problems from violent knife usage, knife laws required that blade tips be clipped so they were no longer considered to be weapons. People realized that a modified blade like this was already in existence being used only as a shaving tool. The straight razor. The straight razor, with no laws regulating it, was a shaving tool that now became a weapon for self-defense.

Update. Good year for an inspired modern version of the straight razor. Extrema Ratio created its T-Razor folder. A duel purpose knife you can use for every-day-carry as well as self-defense.

The Extrema Ratio T-Razor has been customer tested on the usual items: cardboard, paper, ropes, strapping tape, etc. and has performed well and retained its initial sharpness.

A simple, well designed, unique knife. One that is guaranteed to bring you attention and comments. Has the Extrema Ratio Italian look and unmistakable attention to detail.


Does not have thumb studs. The blade extends past the closed handle end and is formed to provide a rapid, easy way to flip it open. This blade has a satin finish. In keeping with being a straight edge, the T-Razor has a clipped, blunt blade. Shaped similar to a standard straight razor but has a larger, wider and more robust blade. Sharp.


It does not have a clip to keep it close to the original straight razor design. Black finish. Ergonomically designed to give you a good grip. Has a lanyard hole.


The T-Razor has a liner-lock

Total Length of Knife Opened: mm 243.00 (9.57 inches)

Length of Closed Knife (including the extended tang): mm 165.10 (6.50 inches)

Blade Length: mm 100.00 (3.94 inches)

Handle Length: mm 146.05 (5.75 inches)

Weight of Knife: g 124.74 (4.4 ounces)

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

Blade Width (Widest Section): mm 25.40 (1.00 inches)

Closed Knife Thickness: mm 12.00 (0.47 inches)

Blade Steel: Bohler N690 cobalt stainless steel*

Blade Hardness: Rockwell 58 HRC

Grinding: Razor 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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