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Extrema Ratio

Extrema Ratio

Extrema Ratio, located in Prato, Italy, has been designing, manufacturing and selling high performance combat knives since 1997 enjoying a reputation for excellence that is unsurpassed in the military and tactical knife industry.

The increased capacity through the years enabled Extrema Ratio to extend its operations. As part of this effort, the company moved in 2004 to a new 600 square meter facility in order to meet the market demand and the company quickly established itself as one of the country's leading cutlery manufacturers.

Extrema Ratio serves military and law enforcement communities as well as commercial markets and the knives are well known and sought after all over the globe.

The company prides itself in design, material and quality to deliver a high end product that meets the most severe mil-standards.

The production based on modern cutting edge technology is combined with traditional craftsmanship and the result is the pinnacle of this synthesis. The Extrema Ratio design team uses the 3D system to design new models and create prototypes. Each knife design is then meticulously inspected and then field tested. At this point the finest materials are chosen for durability, function and beauty. Each knife is then hand assembled and hand finished and inspected by Extrema Ratio team of craftsmen.

First class handwork and well-selected material have contributed to form the image of the Extrema Ratio trademark all over the world.

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  • ExtremaRatio - Sethlans Survival Knife - N690 Stone Washed - Coltello

    ExtremaRatio - Sethlans Survival - N690 Stein gewaschen - Messer

    395,00 €

    Article code: ER-SETH-SW

  • ExtremaRatio - Sethlans Survival Knife - N690 Stone Washed - Coltello

    ExtremaRatio - Sethlans Survival - D2 Exp Dark - Messer

    395,00 €

    Article code: ER-SETH-D2

  • ExtremaRatio - Psycho 19cm. - Coltello da Chef

    ExtremaRatio - Misericordia - 4° Reggimento Alpini Paracadutisti - Taktisches Messer

    184,00 €

    Article code: ER-MIS-BK

  • ExtremaRatio - Task Testudo - Coltello

    ExtremaRatio - Task Desert Warfare - Tactical Knife - Messer

    362,00 €

    Article code: ER-TASK-DW

  • ExtremaRatio - Ti-Rock Tactical Version - Limited Edition - coltello knife messer couteau cuchillo poignard chiudibile tascabile pieghevole

    ExtremaRatio - Frame Rock Titan - Blaues Satin - Klappmesser

    518,00 €

    Article code: ER-FRTI-BL

  • ExtremaRatio - N.K.1 Stone Washed - Neck Knife - Coltello

    Knives.it von ExtremaRatio - Tengu Tactical Black Messer - Standard Edition - Icepick Karambit - Messer

    135,01 €

    Article code: KN-TENGU-S

  • ExtremaRatio - Ti-Rock Tactical Version - Limited Edition - coltello knife messer couteau cuchillo poignard chiudibile tascabile pieghevole

    ExtremaRatio - Frame Rock Titan - Schwarzes DLC - Klappmesser

    525,00 €

    Article code: ER-FRTI-BK

  • ExtremaRatio - N.K.1 Stone Washed - Neck Knife - Coltello

    Knives.it von ExtremaRatio - Tengu Tactical Black Messer - Collection Edition - Icepick Karambit - Messer

    155,00 €

    Article code: KN-TENGU

  • ExtremaRatio - 39-09 COFS Combat - coltello

    ExtremaRatio - 39-09 - Einsatzkommando Spezialkräfte COFS Kampfmesser

    345,00 €

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - E.C.M. Cobra - ECM Einsatzkommando - Messer

    369,00 €

    Article code: ER-ECM

  • ExtremaRatio, MF1 BC, coltello chiudibile

    ExtremaRatio - MF1 BC Messer - PRIVATE COLLECTION - Klappmesser

    245,00 €

    Article code: ER-MF1BC-CP

  • ExtremaRatio - Pugio SE Black - Filo Singolo - coltello

    ExtremaRatio - Giant Mamba - Schwarz - taktisches Messer

    293,00 €

    Article code: ER-GMA-BK

  • ExtremaRatio - Pugio SE Black - Filo Singolo - coltello

    ExtremaRatio - Giant Mamba - Ranger Green - taktisches Messer

    252,00 €

    Article code: ER-GMA-RG

  • ExtremaRatio - Pugio SE Black - Filo Singolo - coltello

    ExtremaRatio - Giant Mamba - HCS - taktisches Messer

    252,00 €

    Article code: ER-GMA-HC

  • ExtremaRatio - Pugio SE Black - Filo Singolo - coltello

    ExtremaRatio - Contact C Knife HCS - taktisches Messer

    191,00 €

  • ExtremaRatio - Pugio SE Black - Filo Singolo - coltello

    ExtremaRatio - Contact C Knife Black - taktisches Messer

    204,00 €

    Article code: ER-CC-BK

  • ExtremaRatio - Pugio SE Black - Filo Singolo - coltello

    ExtremaRatio - Contact C Knife Ranger Green - taktisches Messer

    191,00 €

    Article code: ER-CC-RG

  • ExtremaRatio - Aggancio Sottocamicia per modelli NK1, NK2 ed NK3 - Accessori Fodero

    Ulticlip - SLIM 2.2 Universeller kleiner Clip - Messerzubehör

    14,49 €

  • ExtremaRatio - Aggancio Sottocamicia per modelli NK1, NK2 ed NK3 - Accessori Fodero

    Ulticlip - SLIM 3.3 Universal Medium Clip - Messerzubehör

    14,49 €

  • ExtremaRatio - Aggancio Sottocamicia per modelli NK1, NK2 ed NK3 - Accessori Fodero

    Ulticlip - ULTICLIP3 + großer Universalclip - Messerzubehör

    15,01 €

    Article code: ULTICLIP3+

  • ExtremaRatio, MF1 BC, coltello chiudibile

    ExtremaRatio - T911 Tuscania Rescue Tool - Klappmesser

    295,00 €

  • ExtremaRatio - BF4 R knife Satin - coltello

    ExtremaRatio - BD4 R Messer Satin - Messer

    167,01 €

    Article code: ER-BD4RB

  • ExtremaRatio - Resolza Stone Washed - coltello

    ExtremaRatio - Resolza 10 - Schwarz - Pattada Messer

    178,00 €

    Article code: ER-RE10-BK

  • ExtremaRatio - Resolza Stone Washed - coltello

    ExtremaRatio - Resolza 10 - Stone Washed - Messer

    175,00 €

    Article code: ER-RE10-SW

  • ExtremaRatio - Pugio SE Black - Filo Singolo - coltello

    ExtremaRatio - Contact Wolf Grey Knife Stone Washed - taktisches Messer

    250,00 €

    Article code: ER-CON-G

  • ExtremaRatio - Pugio SE Black - Filo Singolo - coltello

    ExtremaRatio - Contact Ranger Green Knife Stone Washed - Taktisches Messer

    250,00 €

    Article code: ER-CON-GR

  • ExtremaRatio - BF2V - Coltello per barca

    ExtremaRatio - BF2H Helmsman - Multitool Segelmesser

    212,00 €

  • ExtremaRatio - Pugio SE Black - Filo Singolo - coltello

    ExtremaRatio - Contact Knife Black - taktisches Messer

    289,99 €

    Article code: ER-CONT-B-B

  • ExtremaRatio - Pugio SE Black - Filo Singolo - coltello

    ExtremaRatio - Contact Desert Knife Stone Washed - taktisches Messer

    250,00 €

    Article code: ER-CONT-DES

  • ExtremaRatio - Pugio SE Black - Filo Singolo - coltello

    ExtremaRatio - Silente Knife Black - NOCS Polizia di Stato - Messer mit Mehrzweckzange

    495,00 €

  • ExtremaRatio - Pugio SE Black - Filo Singolo - coltello

    ExtremaRatio - Nimbus Special Knife - Collector's Edition - Messer

    713,00 €
    Fuori Produzione - Discontinued
  • ExtremaRatio - Police I knife - Multiuso - coltello

    ExtremaRatio - Police I Messer - Mehrzweck 2 Klingen - Messer

    240,00 €

    Article code: ER-POLICE

  • ExtremaRatio - Fulcrum Nibbio - Esercito Italiano - Testudo - coltello

    ExtremaRatio - Fulcrum Bayonet knife NFG Black - messer

    458,00 €

  • ExtremaRatio - Pugio SE Black - Filo Singolo - coltello

    ExtremaRatio - Nimbus Black Operative - Messer

    289,01 €

    Article code: ER-NIMBUSOP

  • ExtremaRatio - BF4 R knife Satin - coltello

    ExtremaRatio - BD2 R Satin - coltello

    162,00 €

    Article code: ER-BD2R

  • Extremaratio - Venom Stone Washed Half Serrated Knife

    Extremaratio - Venom Stone Washed Half Serrated Knife - messer

    316,00 €
    Verfügbar in 10/15 Tagen (vorbehaltlich Verfügbarkeit in den Lagern des Herstellers)

    Article code: ER-VENSW

  • Extremaratio - Venom Stone Washed Half Serrated Knife

    Extremaratio - Venom Stone Washed Half Serrated Knife - USED - Messer

    0,00 €
    Verfügbar in 10/15 Tagen (vorbehaltlich Verfügbarkeit in den Lagern des Herstellers)
  • ExtremaRatio - BF4 R knife Satin - coltello

    ExtremaRatio - BD2 Lucky Desert Messer - Messer

    155,00 €

    Article code: ER-BD2-D

  • ExtremaRatio - BF4 R knife Satin - coltello

    ExtremaRatio - BD2 Lucky Black Messer - Messer

    164,00 €

    Article code: ER-BD2-B

  • ExtremaRatio - N.K.1 Stone Washed - Neck Knife - Coltello

    ExtremaRatio - N.K. Steel Talon - Neck Knife - NKST - Messer

    148,00 €

  • ExtremaRatio, BF1CD, Drop Point, coltello

    ExtremaRatio - BD0 R - Schwarz - Stone Washed - Messer

    85,00 €

    Article code: ER-BD0RBK

  • ExtremaRatio, BF1CD, Drop Point, coltello

    ExtremaRatio - BD0 R - HCS - Stone Washed - Messer

    85,00 €

    Article code: ER-BD0RHC

  • ExtremaRatio, BF1CD, Drop Point, coltello

    ExtremaRatio - BD0 R - Ranger Green - Stone Washed - Messer

    85,00 €

    Article code: ER-BD0RRG

  • ExtremaRatio, BF1CD, Drop Point, coltello

    ExtremaRatio - BD0 R - Desert - Stone Washed - Messer

    85,00 €

  • ExtremaRatio - BF4 R knife Satin - coltello

    ExtremaRatio - BF4 Lucky Desert - Messer

    169,99 €

  • ExtremaRatio - BF4 R knife Satin - coltello

    ExtremaRatio - BD4 Lucky Black - Messer

    180,00 €

    Article code: ER-BD4LB

  • ExtremaRatio - BF4 R knife Satin - coltello

    ExtremaRatio - BD4 R Messer Satin - Messer

    177,00 €

    Article code: ER-BD4R

  • ExtremaRatio - 185° RAO - nuova versione 2018 - coltello

    ExtremaRatio - 185 ° RAO - neue Version 2018 - Messer

    367,00 €

    Article code: 4247

  • ExtremaRatio, BF1CD, Drop Point, coltello

    ExtremaRatio - BF0 R CD - Stone Washed - Messer

    83,00 €

  • ExtremaRatio, BF1CD, Drop Point, coltello

    ExtremaRatio - BF0 R CD - Desert Warfare - Stone Washed - Messer

    83,00 €

    Article code: BF0-R-CD-DW

  • ExtremaRatio, BF1CD, Drop Point, coltello

    ExtremaRatio - BF1CD Desert Warfare - Drop Point - Messer

    182,00 €

    Article code: ER-BF1CD-DW

  • ExtremaRatio - Psycho 19cm. - Coltello da Chef

    ExtremaRatio - Requiem Wolf Grey - Taktisches Messer

    153,00 €

    Article code: ER-REQ-WG

  • ExtremaRatio - Psycho 19cm. - Coltello da Chef

    ExtremaRatio - Requiem Ranger Green - Taktisches Messer

    153,00 €

    Article code: ER-REQ-RG

  • ExtremaRatio - Psycho 19cm. - Coltello da Chef

    ExtremaRatio - Requiem Desert - Taktisches Messer

    153,00 €

    Article code: ER-REQ-DE

  • ExtremaRatio - Psycho 19cm. - Coltello da Chef

    ExtremaRatio - Requiem HCS - Taktisches Messer

    153,00 €

    Article code: ER-REQ-HC

  • ExtremaRatio - Psycho 19cm. - Coltello da Chef

    ExtremaRatio - Requiem Black - Taktisches Messer

    165,01 €

    Article code: ER-REQ-BK

  • ExtremaRatio - Psycho 19cm. - Coltello da Chef

    ExtremaRatio - Mamba Wolf Gray - taktisches Messer

    154,00 €

    Article code: ER-MAM-WG

  • ExtremaRatio - T-Razor - coltello

    ExtremaRatio - Panthera Satin - Klappmesser

    251,00 €

    Article code: ER-PAN-SA

  • ExtremaRatio - T-Razor - coltello

    ExtremaRatio - Panthera Black - Klappmesser

    232,00 €

    Article code: ER-PAN-BL

  • ExtremaRatio - 185° RAO - nuova versione 2018 - coltello

    ExtremaRatio - 185 ° RAO - Erstausgabe - Coltello

    367,00 €
    Fuori Produzione - Discontinued
  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Defender 2 Stone Washed - Messer

    217,00 €

    Article code: ER-DEF2SW

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Defender 2 Black - Messer

    242,00 €

    Article code: ER-DEF2BL

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Defender 2 DG Black - Messer

    245,00 €

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Defender DG Stone Washed - Messer

    216,00 €

    Article code: ER-DEFDGSW

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Defender Black - Messer

    238,00 €

    Article code: ER-DEFBL

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Defender DG Black - Messer

    241,00 €

    Article code: ER-DEFDGBL

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Scout Black - Messer

    202,00 €

    Article code: 12656

  • ExtremaRatio - Psycho 19cm. - Coltello da Chef

    ExtremaRatio - Mamba Desert - taktisches Messer

    154,00 €

    Article code: ER-MAM-DE

  • ExtremaRatio - Psycho 19cm. - Coltello da Chef

    ExtremaRatio - Mamba HCS - taktisches Messer

    154,00 €

    Article code: ER-MAM-HC

  • ExtremaRatio - Psycho 19cm. - Coltello da Chef

    ExtremaRatio - Mamba Ranger Green - taktisches Messer

    154,00 €

    Article code: ER-MAM-RG

  • ExtremaRatio - Psycho 19cm. - Coltello da Chef

    ExtremaRatio - Mamba Black - taktisches Messer

    165,01 €

    Article code: ER-MAM-BK

  • ExtremaRatio - BF2 R CD - Razor Opening - Black Drop Point - messer

    ExtremaRatio - BF2 R CD - Razor Opening - Black Drop Point - messer

    193,00 €

  • ExtremaRatio - BF2 R CT - Razor Opening - Black Tanto Point - messer

    ExtremaRatio - BF2 R CT - Razor Opening - Black Tanto Point - messer

    193,00 €

    Article code: ER-BF2RCT-B

  • Extremaratio - A.M.F. Advanced Multi Function Black - AMF - Coltello

    Extremaratio - A.M.F. Advanced Multi Function Black - AMF - Messer

    388,00 €

    Article code: ER-AMFBL

  • Extremaratio - A.M.F. Advanced Multi Function Desert - AMF - Coltello

    Extremaratio - A.M.F. Advanced Multi Function Desert - AMF - Messer

    381,01 €

    Article code: ER-AMFDE

  • ExtremaRatio - Shrapnel OG Testudo - coltello

    ExtremaRatio - Scout Satin - Messer

    172,00 €

  • ExtremaRatio - Glauca J1 Jagdkommando - coltello

    ExtremaRatio - Glauca J1 Jagdkommando - messer

    518,00 €

  • ExtremaRatio - Shrapnel OG Full Handle - Black - coltello

    ExtremaRatio - Task J - Jagdkommando - messer

    382,99 €

  • ExtremaRatio - Psycho 19cm. - Coltello da Chef

    ExtremaRatio - Verpackung 6 Stück Sector 1 tafelmesser 4cm - Tischmesser

    270,00 €

    Article code: set-sect1

  • ExtremaRatio, BF1CD, Drop Point, coltello

    ExtremaRatio - BF0CD - Stone Washed - Messer

    83,00 €

    Article code: 12645

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