1.3-6" white ceramic knife; 2.Rigity(HRV)>87; 3.No rusted,never discolor; 4.Heat ... proof,Hygiene; 5.Abrasion resistance Ceramic Knife – High Density ZirconiaItem No ... .: JH3A1-P02,JH4A1-P02,JH5A1-P02,JH6A1-P02Model: 3", 4", 5", 6", 7" ... cutting than other traditional steel knife.Hygiene: no smell or oxidation on the blades will ...