... to clean; 4,Health,fashion 5,ISO9001 6inch Ceramic Knife – High Density ZirconiaItem No.: JH3F1-P02 ... JH7F1-P02Model: 3", 4", 5", 6", 7" ceramic knife A seriesBlade Material: zirconium dioxide (ZrO2; also ... Knife153mm36mm2.0mm130mm283mm7-inchChef’s Knife178mm42mm2.2mm130mm308mm Features: Our ceramic knives are made of ZrO2, the hardness would ... . Thank you. 6 inch zirconia ceramic knives with ABS handle