Extrema Ratio Tuscan Black G10, Satin N690 (04.1000.0106/SAT-BLK)

Extrema Ratio Tuscan Black G10, Satin N690 Knife (04.1000.0106/SAT-BLK)

The Extrema Ratio Tuscan Black Satin is a full-size fixed-blade knife designed for a variety of purposes, including outdoor, survival, and professional applications. The design features a blade made of Böhler N690 steel, black G10 grips, and a solid full tang with the balance shifted toward the blade.

The 167 mm blade features a Modified Tanto profile, a flat grind, and a satin finish. The variable grind geometry combines efficient cutting near the Handle with greater durability at the front of the blade for heavier tasks such as chopping or whittling.

Böhler N690 with a hardness of 58 HRC

The blade is made of Böhler N690 steel, hardened to 58 HRC. This material offers a good balance of corrosion resistance, edge retention, and properties suitable for demanding outdoor applications.

Modified Tanto, flat grind, and Satin

The Modified Tanto profile combines a strong tip with a long cutting edge. The flat grind features a varied geometry—it is thinner near the handle and thicker toward the tip, which maintains good cutting efficiency while increasing the front section of the blade’s resistance to heavier loads.

The satin finish emphasizes the knife’s utilitarian character and contrasts with the black handle grips.

Full Tang, Black G10, and a blade-biased balance

The Full Tang construction has been locally lightened under the grips, which shifts the balance toward the blade. This weight distribution supports performance during chopping and hacking and helps leverage the knife’s robust geometry for heavier field tasks.

The handle is made of black G10. Its ergonomic shape allows for a secure grip in both standard and reverse stances, even when wearing gloves. The end of the handle can function as a window breaker.

Key Features at a Glance

• Böhler N690 – blade steel with a hardness of 58 HRC.
• Modified Tanto – a robust profile with versatile utility.
• Flat – a flat grind with variable geometry.
• Satin – a satin finish on the blade.
• Full Tang – full tang construction.
• Offset Tang – balance shifted toward the blade.
• Black G10 – black handle grips.
• 434 g – weight that supports performance during heavier tasks.
• Glass breaker – functional handle end.
• Cordura Sheath – sheath compatible with MOLLE and thigh mount.

Technical Data

Frequently Asked Questions

What makes Böhler N690 steel stand out?

Böhler N690 is a stainless steel valued for its good combination of corrosion resistance, edge retention, and performance characteristics. In the Tuscan model, it has been hardened to 58 HRC.

What is the variable grind geometry in the Extrema Ratio Tuscan?

The edge is thinner near the handle and thicker toward the tip. This allows for efficient cutting combined with greater durability of the front part of the blade during heavier work.

What is the purpose of the Full Tang weight-relief design?

The localized weight relief on the tang beneath the grips shifts the balance toward the blade. This weight distribution supports performance during chopping and batoning.

Is the Extrema Ratio Tuscan suitable for batoning and chopping?

Yes. The massive 6-mm-thick blade, Full Tang construction, balance shifted toward the blade, and variable edge geometry were also selected with more demanding field work in mind.

How can you carry the Extrema Ratio Tuscan sheath?

The dedicated Cordura sheath is MOLLE-compatible and can also be mounted on the thigh, allowing you to adjust the carrying method to your gear configuration.

Prepared by: Specialists at Sharg® company – Your expert in EDC and cutting tools