Made from zirconium oxide, anti-bacteria, anti-fouling, non-toxic, and non-corrosive. Super hard, high-density, and sharp blade, not easy to be blunt. No reaction with any food and can preserve the original color and taste of the food, keep the food's freshness and nutrition.No stimulation to your eyes when cutting excitant food like onions.No transferring odors from one food item to another. Not any taste or strange smell will be left on the blade, safe, healthy, and environmentally friendly. The best tool for cutting the fish, fruits, vegetables, meat, and guaranteeing the family especially the baby's health and the food's cleanness and health. Kindly reminder: intended for cutting fruits, vegetables, and boneless meats, not intended for pry, flexing, violent chopping, or boning. Be used on a plastic or wood cutting board and avoid cutting frozen food or on the surface of marbles, glass, and steel board. Wash the knife after every single use, preferably by hand with a mild detergent, and do not wash it in the dishwasher.