... to diamond Ceramic Knife – High Density ZirconiaModel: 3", 4", 5.5", 6.5", ceramic knife eriesBlade Material: zirconium dioxide (ZrO2; also known ... availableHandle Material: ABS+TPR handleSize Available: 3", 4", 5.5", 6.5"Features: Our ceramic knives are made of ZrO2, the ... hardness would close to the diamond, which ensures a longer lasting cutting than other traditional steel knife.Hygiene: ...