Ceramic knife is made by zirconium oxide by high temperature, it is very sharp, hard and keeping to use. Blade Length:5.5" Total Length:232mm Blade Width 32.0mm Blade Thickness:1.9mm Blade Material:zirconium oxide Handle:ABS+TPR Packaging :bamboo works Specialty :This type of ceramic knife with figure shealth 1. Ceramic knife is made by zirconium oxide by high temperature it is very sharp, hard and keeping to use. 2. The density of the knife is very high, the food will not stick on the body of the knife, easy to clean and control the bacteria reproduce. 3. Will not rust because of this knife doesn’t contain iron or metal. 4. The ceramic knife is light and sharp, take care when using. 5. The using life of ceramic knife is 60 times than metal knifes.