The Wusthof Pro Knives are the knives for the professionals. Designed by chefs and built exclusively for the tough day-to-day demands of the professional kitchen. The knives are made from high-carbon, stain-resistant steel. 56° Rockwell hardness for excellent edge retention. Very unique two-stage ergonomically designed handle which is manufactured utilising two high performance synthetic materials: The inner core is made of an advanced synthetic material to give the handle great stability for prolonged use. The outer shell is made of a softer slip-resistant material. The knives are also NSF-tested and certified.