Victorinox Fibrox Pro 5-inch Curved Semi-Stiff Boning Knife

About half the people who order this knife from us work in meat and poultry processing. The other half are home cooks who break down their own chickens. The Victorinox Fibrox Pro Curved Semi-Stiff Boning Knife has a short, narrow blade that follows the frame of a bird and enough backbone to push through cartilage at the joints. Customers rarely exchange it for another size or flex, so it is a sound first boning knife for anyone unsure where to start.


Close Work on Poultry and Smaller Cuts

The curve keeps the edge against the bone as you separate a thigh from the carcass or lift breast meat off the keel, so less meat stays on the frame. The narrow blade turns easily inside a joint, which suits poultry and smaller cuts of pork and lamb. Semi-stiff sits between Victorinox’s flexible and stiff blades. It cuts through connective tissue without bowing and gives a little where the bone changes direction. On a long shift, the textured Fibrox Pro handle matters as much as the blade, since it stays secure in wet or greasy hands.


Choosing a Victorinox Boning Knife

Victorinox makes boning knives in several lengths, widths and degrees of flex. These are the closest alternatives:

KnifeHow it differsWhere it fits
Fibrox Pro 6-inch Curved Semi-StiffLonger, same flexAn all-purpose boning knife, from frenching chops to breaking down a chicken, with more reach for larger cuts
Fibrox Pro 5-inch Curved FlexibleSame length, more flexBoning small fish and chicken thighs, and removing silver skin
Fibrox Pro 6-inch Curved FlexibleLonger, more flexPoultry processing, where the blade slides in and around joints
Fibrox Pro 6-inch Stiff Extra-WideLonger, wide and stiffBeef and pork, where a wide blade tracks straight along large bones

The Victorinox Hardwood 5-inch Curved Semi-Stiff Boning Knife pairs a blade of this size and flex with a wooden handle. For how boning knives differ from fillet and breaking knives, see our Kitchen Knife Shapes guide.

SKU: 5.6603.12

Availability: In stock

$33.00
  • Details

    Specifications

    • Blade Length: 5 inches (12 cm)
    • Overall Length: 10.1 inches (257 mm)
    • Weight: 3.2 ounces (91 g)
    • Blade Shape: Curved, narrow
    • Flexibility: Semi-stiff
    • Edge: Straight
    • Blade Material: Stamped high-carbon stainless steel
    • Hardness: 55 to 56 HRC
    • Handle: Black Fibrox Pro thermoplastic elastomer (TPE), textured
    • Certification: NSF certified
    • Model Numbers: 5.6603.12; US item 40514
    • Country of Origin: Switzerland
    • Warranty: Victorinox lifetime warranty against defects in material and workmanship

    Tips for Best Results

    • Keep the blade angled toward the bone and work in short, controlled strokes, letting the curve follow the bone’s contour.
    • Stamped butcher-knife steel at this hardness comes back to a working edge with a few passes on a smooth rod, such as the F. Dick 10-inch Non-Chromium Polishing Steel. Our Honing Rod Guide explains how to match a rod to a knife.

    Care

    Additional Info

    Blade Length (Inches) 5 in.
    Blade Length (mm) No
    Blade Width (inches) No
    Grind 50/50 Bevel
    Steel Type Martensitic Stainless Steel
    Rockwell Hardness 55/56
    Stainless Yes
    Handle Material Fibrox
    Spine Thickness (mm) No
    Brand Victorinox
    Country of Manufacture Switzerland
    SKU 5.6603.12
    Manufacturer's Part Number 40514
    Manufacturer's Suggested Retail Price $33.00

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