The Extrema Ratio Accessories category gathers original spare parts and accessories designed to maintain, restore, and prolong the efficiency of tools over time. Every accessory is created to integrate perfectly with the product, respecting its geometries, materials, and function. No forced adaptations. No generic solutions.
Designed for real-world use A used knife works. A tool that works wears out. Extrema Ratio accessories exist to allow the tool to continue doing what it was designed for, without compromising performance, safety, or reliability.
SubcategoriesSurvival Kits & Tools Compact support systems designed for self-sufficiency, emergencies, and managing the unexpected. Essential, always ready when needed.
Sharpeners Practical solutions for edge restoration. To maintain blade effectiveness over time, even far from dedicated equipment.
Sheaths & Handles Original components to replace, update, or customize. Same compatibility, same quality.
Closing the circle Choosing an original accessory means recognizing the value of the tool and taking care of it over time. Not to preserve it, but to keep using it.
Extrema Ratio Accessories:
taking care of what takes care of you.
Continuity
Original spare parts and accessories designed to keep the tool efficient over time, without altering performance, safety, or behavior.
Compatibility
Every component is born to integrate perfectly with the Extrema Ratio product: same geometries, same materials, no adapted solutions.
Function
Accessories designed for real-world use: sharpening, carrying, replacing, maintaining. Only what is necessary to continue using the tool correctly.
When you can't show it, but you must have it.
Extrema Ratio shoulder holster is designed to carry your knife discreetly, securely, and always ready for action.
Rao black sheath, fitting Rao, Rao II.
This particular sheath allows to carry the knife with the blade closed by placing it in the specific front pocket, or with the blade open by inserting it in the dedicated compartment which has a safety system consisting of a strap with double clips. In addition there is also a diamond sharpener. The MOLLE fixing system of the sheath allows it to be carried on tactical vests and generic belts.
Estrema Hammer is the accessory that turns your axe into an even more powerful and multifunctional tool. Made of heat-treated carbon steel, this hammer (pounding mass) hooks and unhooks from the axe pick by means of a snap mechanism with a safety to avoid accidental disengagements and ensure maximum reliability.
