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Extrema Ratio knife


Extrema Ratio knife


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EXTREMA RATIO TK BF1 FOLDER
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extrema ratio tk bf1 folder
(ref.: 0143TKF)
Immediate shipping
Stock: 1
Our restyled series of training knives are manufactured in a wide range of models of diverse size and shape. They enable martial arts practitioners and professionals to train different combat techniques with an appropriate and dedicated tool. All training knives are produced in a metallic blue colour which makes them easily identified even when sheathed. The blades are produced from anodized aluminum and have the very same shape and size of the Extrema Ratio standard production models. The handles are the same used in our production models. The sheaths, sold separately, are the same used for the real knives. The stiff blade allows for training complex defensive and disarming techniques. We recommend the use of appropriate protective gear when training.


TECHNICAL SHEET:
Weight g.:102
Weight oz.:3,6
Blade Length (mm):68
Blade Length (in):2,7
Total Length (mm):170
Total Length (in):6,7
Blade Thickness (mm):3
Blade Thickness (in):0,12
Blade Material:AISI 420C STEEL
Handle Material:ANTICORODAL ANODIZED ALUMINUM
€ 81,12 Euros
($ 97,86 USD)

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Extrema Ratio Knife Tk Suppressor
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extrema ratio trainer knife suppressor
(ref.: 0312TK)
Immediate shipping
Stock: 1
This knife simulates the knife Extrema Ratio Suppressor The sheet comes in a metallic blue color for easy identification The material is anodized aluminum sheet maintaining the shape and dimensions of the knife that represents The rigidity of the blade allows bringing the complexities of defense and disarmament of the training. We recommend the use of proper protective equipment for each type of training

Length: 33 Cm.
High: 2,5 Cm.
Width: 5 Cm.
€ 36,24 Euros
($ 43,72 USD)

Product added

EXTREMA RATIO TASK BLACK 084TSKDW KNIFE
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extrema ratio mount task desert warfare knife 084tskdw.
(ref.: 04.1000.0084/DW)
Shipping 8-10 days
- Partially symmetric flat leaf flush on both sides.
- Has a notch to position the index finger in front of the guard, which makes the center of gravity to be in the palm of your hand
- This form provides better control handle of the knife for many forms of work
- BLADE LENGTH: 160 mm.
- TOTAL LENGTH: 290 mm
- THICKNESS: 6.3 mm.
- Weight: 275 gr.
- STEEL: BOHLER N690 (58 HRC)
- GRIP: FORPRENO (NATO MIL-SPEC elastomer)
- GEAR PARTIAL: YES
- COLOUR: desert

€ 299,87 Euros
($ 361,76 USD)

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EXTREMA RATIO CORVO KNIFE
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corvo extrema ratio knife
(ref.: 04.1000.0442/BLK)
Shipping 8-10 days
The CORVO is a traditional Chilean Army combact knife. Its origins are misterious: it did probably arrive in the New World with the Spanish Conquistadores, who had already appreciated it during the war against the Moors. It shows undoubted affinities with Jambiya, the traditional Arab knife still used nowadays as a Yemen male clothing accessory. CORVO has been used during the War of the Pacific. It was produced in several versions such as: the Curved Corvo with the blade bending at almost 90° and the Corvo Atacameño which is longer but with a gentler bending of the blade for a higher flexibility during use. Extrema Ratio has been inspired by this second version.


Overall length: 30.7 cm

- Length of the leaf: 17,6 cm

- Blade thickness: 6.3 mm

- Type of steel: N690Co

- Hardness of the steel: 58 HRC

- Sheet Style: Machete

- Sharpening Model: Straight

- Finish: Black

- Edge Type: Flat

- Handle length: 13.1 cm

- Handle Material: Forprene

- Handle Color: Black

- Weight: 362 gr.

- Case: Cordura

- Country of origin: Italy.
€ 246,48 Euros
($ 297,35 USD)

Product added

EXTREMA RATIO N.K.2 DESERT WARDFARE
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extrema ratio n.k.2 desert wardfare
(ref.: 04.1000.0204/DW)
Shipping 8-10 days
N.K.2 is a reduced-size knife that enlargesis the family of neck knives by Extrema Ratio. The main differences from the predecessor N.K.1 are the tanto blade and the blood-draining slot. The design of the handle prevents accidental injury while drawing. A groove on the back of the blade accommodates for the user’s index finger or thumb, according to wielding style. Due to its overall construction, the N.K.2 is both capable of offense, through very effective slashing strikes, and useful for minute precision work. The included, rapid
- release Kydex sheath comes with a paracord strip for neck carry. Further, it can be attached via MOLLE system to tactical vests or to any of the compatible cordura sheaths from Extrema Ratio. Available but not included: BELT-CLIP (for attaching sheath to a belt), polymer UNDER SHIRT SYSTEM (for concealed carry). Available versions: N.K.2 BLACK, N.K.2 DESERT WARFARE, N.K.2 STONE WASHED.



TECHNICAL SHEET:
Weight g.:69
Weight oz.:2.4
Blade Length (mm):50
Blade Length (in):1.9
Total Length (mm):128
Total Length (in):5
Blade Thickness (mm):6,3
Blade Thickness (in):0.25
Blade Material:BöHLER N690 STEEL (60HRC)
Blade Finishing:DESERT WARFARE LASER-FINISH
Main Grid:FLAT
Handle Material:BöHLER N690 STEEL (60HRC)
€ 120,12 Euros
($ 144,91 USD)

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EXTREMA RATIO  FULCRUM II T BLACK
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extrema ratio fulcrum ii t black
(ref.: 04.1000.0152/BLK)
Shipping 8-10 days
This model is the evolution of the FULCRUM Folder (out of production since 2005), the first folding knife produced by Extrema Ratio according to the specifics of an Italian counter-terrorism unit. The FULCRUM II is basically identical to its predecessor, the only variations being the addition of a reversible clip and a partially lowered surface on the handle which improves the ergonomics and makes operating the opening pin easier. A manual security lock holds the BACK-LOCK mechanism lever, preventing accidental unlocking of the blade block during heavy-duty use. It can also be used to lock the knife closed in the event it’s taken away from the user: then the FULCRUM cannot be opened, even if the mechanism is often irrevocably damaged. The back of the flat-ground blade offers a comfortable resting point for the thumb. The tempered steel tang can be used as glass breaker and is provided with a hole to affix a security cord. Available versions: FULCRUM II D BLACK, FULCRUM II D DESERT WARFARE, FULCRUM II D BLACK RUVIDO, FULCRUM II T BLACK, FULCRUM II T DESERT WARFARE, FULCRUM II T BLACK RUVIDO.


TECHNICAL SHEET:
Weight g.:204
Weight oz.:7,2
Blade Length (mm):95
Blade Length (in):3,7
Total Length (mm):222
Total Length (in):8,7
Blade Thickness (mm):6
Blade Thickness (in):0,24
Blade Material:BöHLER N690 STEEL (58HRC)
Blade Finishing:MIL-C-13924 BURNISHING
Main Grid:FLAT
Serration (in):1,6
Serration (mm):40
Handle Material:ANTICORODAL ANODIZED ALUMINUM
€ 318,24 Euros
($ 383,92 USD)

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Extrema Ratio Leucoton
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extrema ratio leucoton
(ref.: 04.1000.0331/BLK)
Shipping 8-10 days
A traditional combat knife, inspired by the Corvo model. A sampling part developed for the Chilean Army. It comes with black cordura sheath


TECHNICAL SHEET

Weight g.:339

Weight oz.:11,95

Blade Length (mm):141

Blade Length (in):5,55

Total Length (mm):267

Total Length (in):10,51

Blade Thickness (mm):6,3

Blade Thickness (in):0,248

Blade Material:BöHLER N690 STEEL (58HRC)

Blade Finishing:MIL-C-13924 BURNISHING

Main Grid:FLAT

Serration (in):1,57

Serration (mm):40

Handle Material:FORPRENE

€ 251,16 Euros
($ 303,00 USD)

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Extrema Ratio Defender Dg Stone Washed
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extrema ratio defender dg stone washed
(ref.: 04.1000.0487/SW)
Shipping 8-10 days
The combat version of Scout knife with ultra slim shape. This 103 mm blade comes with a blood drain whick makes it lighter. It is produced in two different versions: with single guard and upper grip, and in DG double guard version. Defender comes with black Kydex sheath fitting the M.O.L.L.E. system. Available in two versions BLACK and STONE WASHED
TECHNICAL SHEET
Weight g.:136
Weight oz.:4,79
Blade Length (mm):103
Blade Length (in):4,05
Total Length (mm):217
Total Length (in):8,54
Blade Thickness (mm):5
Blade Thickness (in):0,19
Blade Material:BOEHLER STEEL N690 (58HRC)
Blade Finishing:STONE WASHED
Main Grid:FLAT
Handle Material:FORPRENE

€ 179,40 Euros
($ 216,43 USD)

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Extrema Ratio Dobermann Iv S Africa
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extrema ratio dobermann iv s africa
(ref.: 04.1000.0185/AFR)
Shipping 8-10 days
Dobermann IV S Africa, a knife dedicated to hunters, projected to skin and work on the prey. It comes with a 145 mm satin blade. Dobermann IV S Africa will come with two different handles: one in santos rosewood and one in forprene. In this way the user can easily change the handle, depending on his needs. Moreover it will come with an Italian handmade leather sheath, a sharpener and a stainless steel marlin spike.
TECHNICAL SHEET
Weight g.:330
Weight oz.:11.6
Blade Length (mm):143
Blade Length (in):5.6
Total Length (mm):294
Total Length (in):11.57
Blade Thickness (mm):6,3
Blade Thickness (in):0.25
Blade Material:BöHLER N690 STEEL (58 HRC)
Blade Finishing:SATIN
Main Grid:FLAT
Handle Material:SANTOS ROSEWOOD

€ 497,64 Euros
($ 600,35 USD)

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Extrema Ratio Bf1 Cd Desert Warfare
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extrema ratio bf1 cd desert warfare
(ref.: 04.1000.0143/DW)
Shipping 8-10 days
BF1 is a folding knife for everyday use: simple, essential and functional. The blade is burnished, with a flat grind and a thick, durable tip. Characteristical lowered flat areas in the handle – also burnished black give access to the opening “pins”, which don’t protrude from the knife when closed. The reversible clip is located on the back of the blade and engulfs its tang – making it discreet to carry. Employs the trustworthy LINER-LOCK blade blocking system. Available versions: BF1 CT BLACK, BF1 CT BLACK ROUGH, BF1 CT DESERT WARFARE, BF1 CD BLACK, BF1 CD BLACK ROUGH, BF1 CD DESERT WARFARE.
TECHNICAL SHEET
Weight g.:88
Weight oz.:3,1
Blade Length (mm):69
Blade Length (in):2,7
Total Length (mm):171
Total Length (in):6,7
Blade Thickness (mm):3
Blade Thickness (in):0,12
Blade Material:BöHLER N690 STEEL (58HRC)
Blade Finishing:DESERT WARFARE LASER ENGRAVING
Main Grid:FLAT
Handle Material:ANTICORODAL ANODIZED ALUMINUM

€ 149,76 Euros
($ 180,67 USD)

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EXTREMA RATIO NK1 NECK KNIFE
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extrema ratio neck knife nk1 123nk1bl. black
(ref.: 04.1000.0123/BLK)
Shipping 8-10 days

- Next to the edge grip, has a slot at the bottom to accommodate the index finger and prevent accidental when removing the knife from its sheath kydex cuts.

- The NK1 is recommended for precision work by its reduced sheet and positioning the index finger on the spine.

- The Kydex sheath has a quick release system

- Weight: 55gr.

- LONG.HOJA: 40mm.

- LONG.Total: 129mm.

- BLADE THICKNESS: 3.6mm.

- SHEET STEEL: Steel Bohler N690 (60HRC)

- HANDLE: Steel Bohler N690 (60HRC)

- GEAR PARTIAL: No

- MAIN DRAIN: Edge razor

- FINISH: Coating MIL-C-13924

€ 113,04 Euros
($ 136,37 USD)

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EXTREMA RATIO SHRAPNEL KNIFE
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shrapnel dw extrema ratio knife
(ref.: 04.1000.0112/BLK)
Shipping 8-10 days
SHRAPNEL OG is a truly versatile "back up" knife with marked combat qualities. Its leaf-shaped blade is flat ground at a characteristically low angle to a wide, extraordinarily sharp edge. The included hard sheath can be worn vertically, horizontally or obliquely (at a 45° angle). Unlike the older model it supersedes, the SHRAPNEL OG hilt design does not include a guard. The original version of the SHRAPNEL OG comes with a 3.9in compact handle, the Full Handle version comes with a more comfortable 5in handle


TECHNICAL SHEET

- Weight g.:204

- Weight oz.:7,2

- Blade Length (mm):110

- Blade Length (in):4,3

- Total Length (mm):213

- Total Length (in):8,4

- Blade Thickness (mm):6,3

- Blade Thickness (in):0,25

- Blade Material:BöHLER N690 STEEL (58HRC)

- Blade Finishing:MIL-C-13924 BURNISHING

- Main Grid:FLAT

- Handle Material:FORPRENE
€ 194,43 Euros
($ 234,56 USD)

Product added

EXTREMA RATIO N.K.3 BLACK
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extrema ratio n.k.3 black
(ref.: 04.1000.0206/BLK)
Shipping 8-10 days
N.K.3 is a reduced-size knife that enlargesis the family of neck knives by Extrema Ratio. N.K.3 is bigger than both N.K.1 and N.K.2, featuring a tanto blade 70mm long and the blood-draining slot. The design of the handle prevents accidental injury while drawing. A groove on the back of the blade accommodates for the user’s index finger or thumb, according to wielding style. Due to its overall construction, the N.K.3 is both capable of offense, through very effective slashing strikes, and useful for minute precision work. The included, rapid
- release Kydex sheath comes with a paracord strip for neck carry. Further, it can be attached via MOLLE system to tactical vests or to any of the compatible cordura sheaths from Extrema Ratio. Available but not included: BELT-CLIP (for attaching sheath to a belt), polymer UNDER SHIRT SYSTEM (for concealed carry). Available versions: N.K.3 BLACK, N.K.3 DESERT WARFARE, N.K.3 STONE WASHED.



TECHNICAL SHEET:
Weight g.:82
Weight oz.:2.8
Blade Length (mm):70
Blade Length (in):2.75
Total Length (mm):153
Total Length (in):6
Blade Thickness (mm):6.3
Blade Thickness (in):0.25
Blade Material:BöHLER N690 STEEL (60HRC)
Blade Finishing:MIL-C-13924 BURNISHING
Main Grid:FLAT
Handle Material:BöHLER N690 STEEL (60HRC)
€ 135,72 Euros
($ 163,73 USD)

Product added

EXTREMA RATIO HF1 D BLACK
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extrema ratio hf1 d black
(ref.: 04.1000.0446/BLK)
Shipping 8-10 days
This folding knife is projected for those who are looking for sturdiness and reliability of a fixed blade but also for compact sizes. Its N690 steel blade is available with Drop or Tanto point. For standard use the well known liner lock is enough safe. In case of hard extreme works it is requested to insert the steel pin in the proper hole to cross the handle and the blade, obtaining in this way a sturdy and reliable knife as much as a fixed blade. The steel clip can be removed or even placed on the opposite site of the handle by replacing it with the second supplied clip. It comes in four different versions: HF1 D BLACK, HF1 D DESERT WARFARE, HF1 T BLACK, HF1 T DESERT WARFARE.


TECHNICAL SHEET
Weight g.:264,5
Weight oz.:9,57
Blade Length (mm):91
Blade Length (in):3,58
Total Length (mm):240
Total Length (in):9,45
Blade Thickness (mm):5,6
Blade Thickness (in):0,22
Blade Material:BöHLER N690 STEEL (58HRC)
Blade Finishing:MIL-C-13924 BURNISHING
Main Grid:FLAT
Handle Material:ANTICORODAL ANODIZED ALUMINUM
€ 304,20 Euros
($ 366,99 USD)

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Extrema Ratio Venom Black
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extrema ratio venom black
(ref.: 04.1000.0126/BLK)
Shipping 8-10 days
For those who feel more at ease with a more traditionally shaped knife. The VENOM is a multipurpose knife with a wide flat grind main edge, most useful in hunting and outdoor sports. Not as suited to combat, it excels in field and precision work thanks to its low grinding angle. The profile and general outline of the blade draw inspiration from Italian and Austro-Hungarian combat knives from the first half of the XX century. Available in Black and Stone Washed versions.


TECHNICAL SHEET

Weight g.:290

Weight oz.:10,2

Blade Length (mm):181

Blade Length (in):7,1

Total Length (mm):312

Total Length (in):12,3

Blade Thickness (mm):6,3

Blade Thickness (in):0,25

Blade Material:BöHLER N690 STEEL (58HRC)

Blade Finishing:MIL-C-13924 BURNISHING

Main Grid:FLAT

Serration (in):1,6

Serration (mm):40

Handle Material:FORPRENE

€ 283,92 Euros
($ 342,52 USD)

Product added

Extrema Ratio Defender 2 Black
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extrema ratio defender 2 black
(ref.: 04.1000.0488/BLK)
Shipping 8-10 days
The combat version of Scout knife with ultra slim shape. This 118 mm blade comes with a blood drain which makes it lighter. It is produced in two different versions: with single guard and upper grip, and in DG double guard version. Defender comes with black kydex sheath tting the M.O.L.L.E. system. Available in two versions BLACK and STONE WASHED
TECHNICAL SHEET
Weight g.:135
Weight oz.:4,76
Blade Length (mm):118
Blade Length (in):4,64
Total Length (mm):232
Total Length (in):9,13
Blade Thickness (mm):5
Blade Thickness (in):0,19
Blade Material:Bo?HLER STEEL N690 (58HRC)
Blade Finishing:MIL-C-13924 BURNISHING
Main Grid:FLAT
Handle Material:FORPRENE

€ 201,24 Euros
($ 242,78 USD)

Product added

Extrema Ratio A.S.F.K.
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extrema ratio a.s.f.k.
(ref.: 04.1000.0438/BLK)
Shipping 8-10 days
A.S.F.K. is a dagger dedicated to and adopted by the new Comando Forze Speciali Esercito Italiano (Italian Special Forces). A.S.F.K. combat knife revives the Arditi tradition and cold weapon assaults which are characteristic of trench warfare. A.S.F.K. is a contemporary interpretation of the famous trench combat knife. It comes with N690 Böhler steel blade, forprene handle and a ring guard for hand protection while using it as a glass breaker.
TECHNICAL SHEET
Weight g.:413,0
Weight oz.:14,6
Blade Length (mm):162
Blade Length (in):6,4
Total Length (mm):289
Total Length (in):11,4
Blade Thickness (mm):6,3
Blade Thickness (in):0,25
Blade Material:BöHLER N690 STEEL (58HRC)
Blade Finishing:MIL-C-13924 BURNISHING
Main Grid:FLAT
Serration (in):1,6
Serration (mm):40
Handle Material:FORPRENE

€ 304,20 Euros
($ 366,99 USD)

Product added

Extrema Ratio Tk Ks
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extrema ratio tk ks
(ref.: 04.1000.0172-TK)
Shipping 8-10 days
Our restyled series of training knives are manufactured in a wide range of models of diverse size and shape. They enable martial arts practitioners and professionals to train different combat techniques with an appropriate and dedicated tool. All training knives are produced in a metallic blue colour which makes them easily identified even when sheathed. The blades are produced from anodized aluminum and have the very same shape and size of the Extrema Ratio standard production models. The handles are the same used in our production models. The sheaths, sold separately, are the same used for the real knives. The stiff blade allows for training complex defensive and disarming techniques. We recommend the use of appropriate protective gear when training.
TECHNICAL SHEET
Weight g.:247
Weight oz.:8,7
Blade Length (mm):241
Blade Length (in):9,5
Total Length (mm):372
Total Length (in):14,6
Blade Thickness (mm):6
Blade Thickness (in):0,24
Blade Material:ANTICORODAL ANODIZED ALUMINUM
Handle Material:FORPRENE

€ 40,50 Euros
($ 48,86 USD)

Product added

EXTREMA RATIO NK1 NECK KNIFE
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extrema ratio neck knife nk1 123nk1bl. stone
(ref.: 04.1000.0123/SW)
Shipping 8-10 days

- Next to the edge grip, has a slot at the bottom to accommodate the index finger and prevent accidental when removing the knife from its sheath kydex cuts.

- The NK1 is recommended for precision work by its reduced sheet and positioning the index finger on the spine.

- The Kydex sheath has a quick release system

- Weight: 55gr.

- LONG.HOJA: 40mm.

- LONG.Total: 129mm.

- BLADE THICKNESS: 3.6mm.

- SHEET STEEL: Steel Bohler N690 (60HRC)

- HANDLE: Steel Bohler N690 (60HRC)

- GEAR PARTIAL: No

- MAIN DRAIN: Edge razor

- FINISH: stone


Length: 17 Cm.
High: 3 Cm.
Width: 7,5 Cm.
€ 103,62 Euros
($ 125,01 USD)

Product added

EXTREMA RATIO SHRAPNEL DESERT WARFARE KNIFE
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shrapnel desert warfare extrema ratio knife
(ref.: 0112DW)
Shipping 8-10 days
SHRAPNEL OG is a truly versatile "back up" knife with marked combat qualities. Its leaf-shaped blade is flat ground at a characteristically low angle to a wide, extraordinarily sharp edge. The included hard sheath can be worn vertically, horizontally or obliquely (at a 45° angle). Unlike the older model it supersedes, the SHRAPNEL OG hilt design does not include a guard. The original version of the SHRAPNEL OG comes with a 3.9in compact handle, the Full Handle version comes with a more comfortable 5in handle.


TECHNICAL SHEET

- Weight g.:241

- Weight oz.:8,50

- Blade Length (mm):110

- Blade Length (in):8.39

- Total Length (mm):240

- Total Length (in):9,44

- Blade Thickness (mm):6,3

- Blade Thickness (in):0.25

- Blade Material:BöHLER N690 STEEL (58HRC)

- Blade Finishing:DESERT WARFARE LASER-FINISH

- Main Grid:FLAT

- Serration (in):1,57

- Serration (mm):40

- Handle Material:FORPENE
€ 209,04 Euros
($ 252,19 USD)

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