Specifications Ceramic knife is made of advanced, high-tech ceramic called Zirconium Oxide (also called Zirconia). Zirconia is second in hardness only to diamond and was originally developed for industrial applications. Zirconia is extremely hard, wear resistant, and chemically inert. It brings a lot of benefits compare to traditional steel knife. It is much lighter than stainless steel (even lighter than titanium). It can be used for months or even years without resharpening. The ceramic blade will not stain, rust, roll at the edge, or impart any metallic taste or smell of food. They are chemically insert, so there is no chance of a chemical reaction affecting the taste of food, and no metallic taste at all. With the lightweight and easy to use, it is the choice for a healthy modern lifestyle. Zirconia Ceramic Knives: Products detail: Blade Material:Zirconium Oxide Handle Material: ABS+TPR,TPV,Anti-Slip,TPE Blade Colour:White,Black,coated or as customer request Handle Colour:Red,Black,Purple,blue or as customer request Available blade SIze:3"4"5"6"7"8" Packing:1 pc/gift box or as costomer request *Blade hardness: HRC90, only secondly to the diamond ,super sharp and last longer; *Wearability: 60 times as much as metal knife ,wear-resistance. *No chemical reaction with food ,no metalic taste and smell. *Anti-corresion,never rust ,keep food orginal color and flavour,enviroment-friendly. *Soft touch ,easy hold handle in accordance with theory of physical engineering science. Main characterstics: 1.FDA/SGS certification 2.Pass 1.2 meter's drop testing If you are interested in any of our products,pls do not hesitate to contact us.