Victorinox Fibrox Pro 7 in. Flank Knife

Engineered for the Breaking Table: The USDA Inspector's Precision Tool


When handling primal slabs in a high-volume processing environment, the feedback of the blade determines the accuracy of every cut. The Victorinox Fibrox Pro 7 in. Flank Knife is not a standard carver; it is a specialized utility tool built for lateral stability. Originally popularized by USDA inspectors for making deep, clean incisions to evaluate meat quality between primal cuts, this knife offers a rigidity that standard carving knives lack. The blade geometry features an upswept tip, allowing the user to navigate the contours of muscle groups without snagging on connective tissue.


In the hand, the patented Fibrox handle provides a distinct, micro-textured grip that remains secure even when coated in animal fats or moisture—a critical safety factor in cold-room environments. The balance point sits just forward of the bolster, encouraging a pinch grip that provides maximum leverage for slicing through dense fibers like flank steak, brisket, or poultry breast. The 56 HRC martensitic stainless steel is tempered to strike a specific balance: hard enough to hold a 50/50 bevel edge through an eight-hour shift, yet ductile enough to be realigned quickly with a ceramic honing rod. Whether you are portioning fish fillets or shearing through thick beef primals, the added spine thickness ensures the blade does not wander, providing the predictable tracking required for professional-grade culinary work.


SKU: 5.5503.18

Availability: In stock

$46.00
  • Details

    Product Specifications & Technical Highlights

    • Blade Construction: Martensitic Stainless Steel (Swiss-made high-carbon alloy).
    • Hardness Rating: 56 HRC on the Rockwell C Scale for optimal edge-to-toughness ratio.
    • Edge Geometry: Hand-tested 50/50 V-ground bevel for ambidextrous use.
    • Blade Dimensions: 7 inches (178mm) length; designed with an upswept profile.
    • Handle Technology: Fibrox® (TPE) Thermoplastic Elastomer; NSF-certified for commercial sanitation standards.
    • Safety Standards: Slip-resistant micro-texture ensures stability in wet/bloody conditions.
    • Identification: SKU: 5.5503.18 | Manufacturer Part Number (MPN): 41511.
    • Weight & Balance: Professional weight distribution for reduced wrist fatigue during repetitive slicing.
    • Manufacturing Origin: Ibach, Switzerland.

    Specialized Care & Maintenance

    • Sharpening Profile: Maintain a 15-20 degree angle per side for factory-level sharpness.
    • Honing Recommendations: Use a standard chrome-plated or ceramic honing steel daily to realign the martensitic grain.
    • Sanitation: While Fibrox handles are heat-resistant, hand-washing is mandatory to prevent high-heat edge degradation in commercial dishwashers.

    Additional Info

    Blade Length (Inches) 7 in.
    Blade Length (mm) No
    Blade Width (inches) No
    Grind 50/50 Bevel
    Steel Type Martensitic Stainless Steel
    Rockwell Hardness 56
    Stainless Yes
    Handle Material Fibrox
    Spine Thickness (mm) No
    Brand Victorinox
    Country of Manufacture Switzerland
    SKU 5.5503.18
    Manufacturer's Part Number 41511
    Manufacturer's Suggested Retail Price $46.00

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