
Extrema Ratio Knife Estrema - Black
The Estrema by Extrema Ratio reimagines the classic tool "axe" – designed for professional use with uncompromising sturdiness and accuracy.
With a blade length of 80 mm and an overall length of 374 mm, this model draws on traditional tools and transforms them into a modern utility tool. The blade steel Böhler N690 is hardened to 54 HRC and offers an outstanding combination of edge retention and toughness. The Dark-Stone finish provides a durable surface and reduces distracting reflections.
The handle made of G10 material is ergonomic and thoughtfully designed: a full grip offers classic comfort, a tighter grip allows for precise close-range use. The handle shaft also features a multifunctional part that can be used as a breaking tool, lever, or crowbar – ideal for rescue or special situations. The set comes with an ambidextrous Kydex sheath that allows versatile carrying options.
This tool is not an ordinary axe but a professional instrument for special forces, outdoor experts, and all who demand maximum function in a single tool.
Knife sales in Switzerland – Important notes
At Alpine Fox you will find only knives that are not classified as weapons under the Swiss Weapons Act (WG). We deliberately carry only models whose possession and purchase in Switzerland are fully legal.
Only one requirement applies to the purchase of a knife:
You must be at least 18 years old.
We still recommend familiarizing yourself with the legal basics when acquiring knives and handling these products responsibly.







