Nancy High-quality Premium Kitchen Ceramic Knife Set Series + Peeler Ceramic Set - Gift Packaging (3inch+4inch+6inch, green) Not easy to breed bacteria, cutting fruits, vegetables and other clear-cut, anti-bacterial anti-fouling, easy to clean . Using precision made of zirconia powder, zirconium oxide content of 99% or more, pure zirconia ceramic knife. With a high density, abrasion resistance, no rust, no oxidation of food, and other characteristics . Cutting fruits, vegetables, boneless meat, bread, sushi, cooked food ect. Abrasion performance is 60 times better than metal knife. High-tech Zirconia crafted, high-density, high hardness, never wear. Hardness (HRA87) is next to diamond