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Home/Tactical/DOBERMANN IV CLASSIC
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DOBERMANN IV CLASSIC

$492.00

DOBERMANN IV evolved from the first and most classic Extrema Ratio model, the K1 DOBERMANN. Over the years, the DOBERMANN has undergone significant changes in look and design to meet evolving user expectations and trends, while at its core retaining consistency with the original 1997 design. This latest iteration excels at structural durability and flexibility of use: as one of our most versatile tools, the DOBERMANN IV is suitable for field activities, outdoor exploration, camping, and technical or professional use.

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Use, care and warranty

USE
PROFESSIONAL OPERATIONAL DEPLOYMENT

Extrema Ratio develops knives engineered for real-world applications, where control, precision, and reliability are essential requirements. Every model is designed to ensure stable ergonomics, proper balance, and consistent performance, even during prolonged use. Use the tool strictly according to its technical function, avoiding improper use or stress beyond its intended scope. Mindful use preserves safety, efficiency, and longevity, keeping structural and operational characteristics of the product intact.

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CARE
ESSENTIAL ROUTINE MAINTENANCE

Regular maintenance is fundamental to preserving the efficiency, reliability, and lifespan of your product. After each use – especially in the presence of salt water, humidity, mud, or grease residues – rinse with fresh water, dry thoroughly, and apply a suitable lubricant to metal parts and moving mechanisms. Periodically inspect the inside of the sheath, removing sand, dust, or abrasive particles that could damage the blade finish when sheathing or unsheathing.

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WARRANTY
OFFICIAL ASSISTANCE AND WARRANTY

Extrema Ratio knives are covered by a lifetime warranty against defects in workmanship, materials, or treatments that compromise their functionality. Sheaths are guaranteed for two years from the date of the first documented purchase. In the event of a recognized defect, the product will undergo a technical inspection and, where possible, be repaired. Should it prove non-restorable, the tool will be replaced with an identical, brand-new item. If the model is no longer available, it will be replaced with the most similar product in terms of features and value.

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Technical sheet

WEIGHT (G)

336

WEIGHT (oz):

11,9

BLADE LENGTH (MM)

185

BLADE LENGTH (IN)

7.3

TOTAL LENGTH (MM):

316

TOTAL LENGTH (IN):

12,4

BLADE thickness (MM)

6,3

BLADE thickness (IN):

0,25

BLADE MATERIAL:

BöHLER N690 STEEL (58HRC

HANDLE MATERIAL:

FORPRENE

BLADE FINISHING:

SATIN

MAIN GRIND:

FLAT