TimHome Eco-friendly and High-quality Zirconia 4 Inch/5 Inch/6 Inch Utility Kitchen Chef's Ceramic Knives for Slicing Paring with Plastic Blade Cover (5 inch, Green) Ceramic knives never rust, stain or change the taste of food like traditional metal knives Ergonomic handle provides unique support for maximum performance Anti-bacterial! No chemical reaction with food and no metal in your food! Environmentally friendly material!