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Extrema Ratio Rao

18+
£337.95
(11 reviews) Write a Review
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The Extrema Ratio Rao is not so much a knife as a feat of engineering. With the customary robust design and precision manufacture the Rao reaches heights of ingenuity never seen before in the arena of knife design. Purposefully crafted for the Folgore 185 RAO (Regiment Acquisition Objects) unit of the Italian Army it is required to perform in environments and over a period of time that most folding knives would not cope with.



The blade is made from N690 stainless steel with a testudo finish, tempered to 58/60 HRC. It is ingeniously double locked open or closed using a threaded hinge attached to the handle with an elastic lace and a slightly more conventional spring loaded, slide bar lock, making it one of the safest knives in the open position in the world. The grip of the handle is specially configured, anticorodal material whilst the extremely tough nylon sheath with leather interior, is designed to take the knife in the open or closed position. A diamond sharpener is also provided in the front pocket of the sheath which is compatable with MOLLE systems. Sheath colour may vary.
SKU:
ER-04.1000.0141/BLK
Brand:
Extrema Ratio
Colour:
Black
Age Restriction:
18+
Blade Length:
11.8000
Overall Length:
26.0000
Blade Material:
N690 Stainless Steel
Blade Thickness:
0.6
Warranty:
1 Year
Closed Length:
14.2000
Handle Material:
Aluminium
Lock Type:
Button Lock
Newest:
2014-01-28 00:00:00
Shipping Group:
STANDARD
Parent Base Price:
337.9500
Lead Time Dropdown:
4 - 6 Weeks

Description


The Extrema Ratio Rao is not so much a knife as a feat of engineering. With the customary robust design and precision manufacture the Rao reaches heights of ingenuity never seen before in the arena of knife design. Purposefully crafted for the Folgore 185 RAO (Regiment Acquisition Objects) unit of the Italian Army it is required to perform in environments and over a period of time that most folding knives would not cope with.



The blade is made from N690 stainless steel with a testudo finish, tempered to 58/60 HRC. It is ingeniously double locked open or closed using a threaded hinge attached to the handle with an elastic lace and a slightly more conventional spring loaded, slide bar lock, making it one of the safest knives in the open position in the world. The grip of the handle is specially configured, anticorodal material whilst the extremely tough nylon sheath with leather interior, is designed to take the knife in the open or closed position. A diamond sharpener is also provided in the front pocket of the sheath which is compatable with MOLLE systems. Sheath colour may vary.

Specification


SKU:
ER-04.1000.0141/BLK
Brand:
Extrema Ratio
Colour:
Black
Age Restriction:
18+
Blade Length:
11.8000
Overall Length:
26.0000
Blade Material:
N690 Stainless Steel
Blade Thickness:
0.6
Warranty:
1 Year
Closed Length:
14.2000
Handle Material:
Aluminium
Lock Type:
Button Lock
Newest:
2014-01-28 00:00:00
Shipping Group:
STANDARD
Parent Base Price:
337.9500
Lead Time Dropdown:
4 - 6 Weeks

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Reviews


  • 5
    Worth every penny...

    Posted by Ed L on 6th Nov 2014

    This is my first ER knife and is unlikely to be my last. Superb fit and finish, shaving sharp out of the box. I checked out a lot of reviews and I have to say that it has exceeded my expectations. It may not be the prettiest example of the Knifemaker's art, but is an excellent example of function driving form. When this beast of a folder is in your hands, it is utterly confidence inspiring. This isn't a collector's piece, it will be put to work and will form the core of a bug out bag. Excellent service as ever from Heinnie.

  • 5
    lynd66

    Posted by Lyndon Roberts on 29th Jan 2012

    This knife is built like a battleship. Very sharp out of the box. Initially I found the blade a bit stiff to open but soon found that you can loosen and tighten the screw with an Allen key. The locking system is very good and solid. It's a brilliant idea to Jane a secondary screw to lock the blade in position to convert a folder into as fixed blade.

  • 5
    A unique knife

    Posted by Mark b on 21st Jun 2011

    One thing that really defines this knife is the sheath, its designed to hold the knife securely when open OR closed.
    I think the concept is - carry into "working environment" closed, open and lock the knife, carry it locked open then close and lock when reaching civilisation.

    I know a few other folders that also have optional "carry open" sheathes but the RAO executes the concept perfectly.

    I really like this knife, thanks for the tip Linda.

  • 5
    UPDATE

    Posted by T.W on 26th Feb 2011

    After the problems I had with play in the blade in the first knife, I returned it and got another, Must of been unlucky, Now its a five star rating!!!!!! What a versatile tough knife, Would be hard pushed to find a tougher bushcraft/survival Folder than this!!!!

    Awesome!!!!!!!

  • 5
    Great Alternative to a Fixed Blade

    Posted by Michael Southworth on 15th Dec 2010

    This was my First Extrema Ratio Knife & wasn't sure if the quality would be so good,I ordered and can say the build quality and design is Great. This is as strong a Folding knife as you will get! It is the most realistic alternative to having Fixed blade knife for bushcraft type work.

  • 3
    MR

    Posted by TREVOR WRIGHT on 20th Jul 2010

    This is an excellent folder and very versatile, looks great and performs great but will never replace a fixed blade, and for the premium cost of this folder extrema should really sort the play out in the blade, tighten screw so plays gone and the knifes hard to open, have a nice linear opening on the blade and no matter what you do it has play when you work it hard, quite dissapointed considering the price!!!

  • 5
    amazing knfe

    Posted by carl on 18th Apr 2009

    The knife is at the top game it blows a lot of my fixed blades away delivery was abit lenthy but it wasnt hennys fault but etrema ratio

  • 5
    RAO

    Posted by Alex on 3rd Oct 2008

    About as tough as a folder will ever get, by far in a league of it's own!!!

  • 5
    Wannabe hatchet...

    Posted by Joe on 20th Aug 2008

    This knife excels at tough chopping tasks like light bush clearance and basha making. Think of it as a folding Kukri. Better thought out than it first appears, hugely strong and well made!