... Knife / Pizza cutting2,Super hardness3,super Sharpness4,Suitable for dishwasher5,Our factory is BSCI certifiedContent of knives: ... knifeAvailable size: 3"/4"5"6"7"8"for bladeBlade colors: white and black or at customer ... ,purple,green,blue or at customer's request.Blade material: zirconium oxide(ZrO2)Handle material: ABS+R ... that to be honesty comes to the first for us to do busibess with evey customers. ...