Click to enlargeExtreme Ratio S.E.R.E. 1

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The Extrema Ratio SERE 1 is a remarkable multipurpose blade! It was developed with major input from survival specialists. Because of this collaboration, the SERE 1 is literally loaded with survival features.

THE BLADE: The SERE 1 blade is specifically designed to be strong. Triangular planes on the tip converge to create a robust point. There is a slot in the blade that you can use as screw pin shackle wrench. A sharpened section (about an inch in length) has been incorporated in the spine as a belt cutter and is located toward the handle. The Extrema Ratio SERE 1 blade has a serrated area that is 1.6 inches (mm 40) in length. This serrated section was designed to be used for cutting ropes, belts, etc.

THE HANDLE: The Extrema Ratio SERE 1 handle is designed to fit between your index and your middle finger with indentations on the rest of the handle (both sides) for your other fingers. This gives you a very powerful grip. Plus the handle is textured to insure your grip is secure even if your hands are wet or you are wearing gloves. There is a substantial window breaker on the end that also incorporates a lanyard hole. There are two additional lanyard holes in the handle to give you more options. On the other end of the Extrema Ratio SERE 1 handle is an exposed metal area that can be used for hammering it also serves as a thumb rest. The handle is slightly angled so it fits comfortably in your hand in a natural position.

THE SHEATH: The sheath for the SERE 1 is made of Kydex. Kydex is a durable thermoplastic that is tough, water proof, and chemical resistant. This hard sheath has an automatic retention to hold your knife in place. The sheath has been extended so that multiple lanyard holes could be placed all around the outer edge. This gives you great versatility. A lanyard is included. The sheath can also be used as a small emergency shovel. On the back of the SERE 1 sheath is an Extrema Ratio belt clip that is adjustable for different angles.

Put the blade, the handle and the sheath together and you get one heck of a survival knife. Extrema Ratio SERE1 is strong. Versatile. Tough. Completely Italian.

Total Length of Knife: mm 210 (8.27 inches)

Blade Length: mm 115 ( 4.53 inches)

Total Length of Knife and Sheath: mm 228.60 (9 inches)

Weight of Knife: g 303.34 (10.7 ounces)

Weight of Knife and Sheath: g 433.75 (15.3 ounces)

Blade Thickness (Widest Part): mm 6.3 (0.25 inches)

Blade Width (Widest Section): mm 49.53 (1.95 inches)

Blade Steel: Bohler N690 cobalt stainless steel*

Blade Hardness: Rockwell 58 HRC

Grinding: Flat

Serrations: Partially serrated blade

Handle: Forprene**

Handle Length (Excludes Window Breaker): mm 106.68 (4.20 inches)

Sheath Material: Kydex

Sheath Belt Clip: Yes


* The blade is made with N690 cobalt stainless steel, a high performance steel with excellent cutting and mechanical characteristics. This Austrian steel is also used in the butchering industry and for making surgical instruments.

** Forprene has extreme temperature and moisture resistance.

Note: Extrema Ratio says that this knife can be sharpened on the spine in order to turn it into a double-edge.

Availability: Usually ships in 2-3 business days

315sereblNOT Checkout Price - Apply Coupon in Shopping Cart: 416.00Extrema Ratio MAP: 416.00
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INFORMATION FOR OUR FOREIGN CUSTOMERS: before you order, check with your Customs Department to determine the amount you will have to pay for fees, taxes, etc. to get your knife. You also need to find out if the knife is legal in your Country, and therefore, will be released by your Customs Department to you. If the knife is confiscated or not returned to us in pristine condition, WE WILL NOT REPLACE THE KNIFE AND WE WILL NOT REFUND YOUR PAYMENT. Also, please do not ask us to change the amount of your purchase on the Customs' paperwork.

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