AluminaCeramic Knife Sharpener: Products detail: Blade Material:Alumina Handle Material: ABS+TPR Blade Colour:White Handle Colour:Red,Black,Purple,blue or as customer request Available blade SIze:18cm, 20cm and 23cm Packing:1 pc/blister card with PS trayor 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 If you are interested in any of our products,pls do not hesitate