The Ergo Chef Pro Series features a patented design proven to reduce strain and increase efficiency. The blades are made of one-piece fully forged high carbon German X50CrMoV15 stainless steel, precision ground to 18° and polished smooth for thin cuts. The smooth rounded bolster provides a comfortable grip for balance and precise control. The seamless molded POM handle provides durability. 56-58 Rockwell Hardness for long lasting sharpness. Lifetime warranty.