Extrema Ratio Knife Ferrum E Black Aluminium, Satin N690 (04.1000.0366/SAT/BLK)

Ferrum E Black Aluminium, Satin (EDC) strongly built folding knife from Extrema Ratio. Proven solutions from the company, profiled aluminium handle, proven N690 steel for the blade, Ball bearings for a smooth opening! Perfect for everyday carry, a reliable companion for everyday life.

N690 - cobalt-rich 1.65% (Co) corrosion-resistant, high-carbon 1.07% (C) martensitic chromium steel 17.30% (Cr) with molybdenum 1.10% (Mo), vanadium 0.10% (V). Developed to provide better wear resistance compared to the original Böhler N690 steel, but with a higher cobalt (Co) content in its composition. It is characterised by extremely high corrosion resistance and long edge retention. One of the best tool steels in the world today. Hardened to between 58 and 61 HRC. Manufactured by Böhler Edelstahl in Kapfenberg, Austria.

Blade - Drop point type covered satin method. The small thickness of the blade combined with the high flat grind (Flat Grind) gives excellent cutting edge geometry and extreme cutting performance. Ball bearings support the opening of the blade with a quick flipper (index-finger flipper) when opened acting as a stag. The entire blade is locked with the proven and popular liner lock.

Handle - grips in anticordal anodized aluminium, screwed to a steel frame. The chamfered edges of the covers eliminate sharp edges and the finger recesses characteristic of Extrema Ratio improve grip security. The so-called open-backed construction without the typical backspacer, secured to each other by steel spacer sleeves, facilitates cleaning. The simple, robust construction provides the assurance of many years of use. The two-position (right/left) steel deep-carry clip allows you to carry the knife discreetly in your pocket in the tip-up position (blade tip up).

Technical data:
Product number: 04.1000.0366/SAT/BLK
Product name: Ferrum E (EDC) Black Aluminium, Satin

Overall length: 186.0 mm / 7.32"
Blade length: 75.0 mm / 2.95"
Blade thickness: 3.0 mm / 0.12"
Handle length: n.d.
Handle thickness: n.d.
Weight: 87.0 g / 3.06 oz

Blade material: N690
Blade hardness: 58 HRC
Blade grind: Flat
Blade finish: Satin

Handle material: Anticordal Anodized Aluminium
Handle finish color: Black
Backspacer material: n.d.
Backspacer colour: n.d.

Clip: Right / Left, Tip-Up
Clip material: Stainless Steel

Pivot mechanism: Ball bearing
Locking mechanism: Liner Lock
Opening method: Manual, flipper
Additional accessories: None

Designer: Extrema Ratio
Brand name: Extrema Ratio
Manufacturer: Extrema Ratio, Italy
Country of origin: Italy

Design: Sharg® company