Victorinox Fibrox Pro 5-inch Curved Flexible Boning Knife

Silver skin, chicken thighs and small fish all call for a blade that bends with the work. The Victorinox Fibrox Pro 5-inch Curved Flexible Boning Knife has a thin, narrow blade with a flexible spine, so it follows a curved bone closely and slips under a membrane without cutting into the meat beneath. Victorinox designs it for trimming fat and sinew as much as for boning.

In our experience, a flexible blade gives up some edge retention, so it needs a steel more frequently than a stiffer knife. For heavy, repetitive boning, the semi-stiff version holds up better. The textured Fibrox Pro handle stays secure when your hands are wet.

Flexible or Semi-Stiff?

The Victorinox Fibrox Pro 5-inch Curved Semi-Stiff Boning Knife has the same length with a firmer blade for poultry processing and heavier cuts. If you need more reach, the Victorinox Fibrox Pro 6-inch Curved Flexible Boning Knife offers the same flex in a longer blade, and the Victorinox Hardwood 5-inch Curved Flexible Boning Knife pairs this blade shape with a wooden handle.

Our Kitchen Knife Shapes guide explains boning knife flex.