Victorinox Filleting Knife, Black Handle 15cm: Victorinox Filleting Knife 15cm blade: Filleting Knife with 15cm Blade. Impress your guests and take your food prep to a whole new level by turning beautifully fresh fish into perfect fillets with the help of our Fibrox Filleting Knife. Combining a sharp blade with an ergonomic and non-slip Fibrox handle, it gives you the agility and cutting power needed to perform the job with precision.