VICTORINOX FIBROX SERIES knives are well known in commercial kitchens and households throughout the world. The patented Fibrox handle is made of a hard wearing, non-slip synthetic. It is NSF approved and can be sterilized. The blade is made from specially tempered X50 Cr Mo high carbon stainless steel. A hardness rating of 55-56 HRC gives this knife an easy to maintain an edge.