... (94.4%min); 2,Heathly and Hygince ceramic knife; 3,ISO 9001,LFGB,EU,SGS TEST 4, ... Sharp for ever Ceramic Knife – High Density ZirconiaItem No.: JH3B1-P01,JH4B1- ... JH6B1-P01Model: 3", 4", 5", 6", 7" ceramic knife B seriesBlade Material: zirconium dioxide (ZrO2; also known as ... ensures a longer lasting cutting than other traditional steel knife.Hygiene: no smell or oxidation on the blades ...