ilife Fruit Knife Set Super hard, high-density and sharp blade, not easy to be blunt. 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 environmental friendly. No reaction with any food and can preserve the original color and taste of the food, keep the food's freshness and nutrition. 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 plastic or wood cutting board and avoid cutting frozen food or on the surface of marbles, glass and steel board. Wash the knife after each single use, preferably by hand with a mild detergent and do not wash it in the dishwasher. For safety's concern, the tip and the heel of the blade have been blunted.Please do not try to sharpen with the grind stone blade was soaking corrosion bleach, dyeing, and so on and so forth available kitchen, please do not use metal cleaning ball is wiped, likely caused by the effect of metal powder black blade