... ZirconiaItem No.: JH3A1-P02,JH4A1-P02,JH5A1-P02,JH6A1-P02Model: 3", 4", 5", 6", 7" ceramic knife A seriesBlade Material: zirconium ... blades availableHandle Material: ABS+TPR handle(anti-slip)Size Available: 3”, 4”, 5”, 6”, 7” and 8"Ref. Specification: ModelStyleLength of ... are made of ZrO2, the hardness would close to the diamond, which ensures a longer lasting cutting than other traditional steel ...