... to diamond Ceramic Knife – High Density ZirconiaModel: 3", 4", 5.5", 6.5", ceramic knife eriesBlade Material: zirconium dioxide (ZrO2; also known as ... a longer lasting cutting than other traditional steel knife.Hygiene: no smell or oxidation on the blades will transfer when touch ... by sea, air, express, etc.• The express companies we worked with are DHL, FedEx, UPS, TNT, and so on. Which we can get ...