... second to diamond; 2,sharp and hard; 3,anti-bacterial,no rust; 4,Health,fashion and portable 5,ISO9001,LFGB,EU Ceramic ... 7" ceramic knife A seriesBlade Material: zirconium dioxide (ZrO2; also known as zirconia)Blade Colour: white, black, and ... -inchChef’s Knife178mm42mm2.2mm130mm308mm Features: Our ceramic knives are made of ZrO2, the hardness ... Thank you. 7 inch ceramic kitchen knives with ABS handle