Folding knife Extrema Ratio BD4 Contractor Black 04.1000.0498/BLK 12.3cm
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Folding knife Extrema Ratio BD4 Contractor Black 04.1000.0498/BLK 12.3cm

Extrema Ratio

€148.39 Tax included ( 0 %)

€148.39 Tax excluded

check In stock ( Lappeenranta: 1, Helsinki: 0)
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Extrema Ratio BD4 Contractor is a black double-edged semi-serrated folding knife with a guard. The guard also acts as a flipper, and the high-speed auxiliary knife opening system makes it easy to use. The ergonomic handle uses anodized aluminum alloy and the stonewashed streamlined blade is made from Böhler N690 cobalt steel. The BD4 Contractor perfectly combines the elegance of classic Italian style with the functionality of an EDC folding knife.

1 Item
Extrema Ratio
Böhler N690
Anodized aluminum
Blade Length, mm
58 HRC
Liner Lock
Total length, mm
Blade thickness, mm
Cool Design, dagger, good size, aluminium, lightweight

MyGoodKnife is official retailer of Extrema Ratio. Located in Prato, Italy, Extrema Ratio 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. Extrema Ratio 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. Each knife that is manufactured at Extrema Ratio has measured up to the Company rigorous standards for quality and performance. The knives are the result of painstaking research and development. This is an Extrema Ratio hallmark. Extrema Ratio knives represent a real, solid value for the money.