... zirconia (94.4%min); 2,Heathly and Hygince ceramic knife; 3,ISO 9001,LFGB,EU,SGS TEST 4,Sharp ... ,JH6B1-P01Model: 3", 4", 5", 6", 7" ceramic knife B seriesBlade Material: zirconium dioxide (ZrO2; also known as zirconia)Blade ... which ensures a longer lasting cutting than other traditional steel knife.Hygiene: no smell or oxidation on the blades will ... you. Thank you. 3" foever sharp ceramic paring knife