... ISO 9001,LFGB,EU,SGS TEST 4,Sharp for ever Ceramic Knife – High Density ZirconiaItem No.: JH3B1-P01,JH4B1- ... JH5B1-P01,JH6B1-P01Model: 3", 4", 5", 6", 7" ceramic knife B seriesBlade Material: zirconium dioxide (ZrO2; also known as ... .8mm115mm216mm5-inchSlicing Knife128mm26mm2.0mm125mm253mm6-inchChef’s Knife153mm36mm2.0mm125mm278mmFeatures: Our ceramic knives are made of ZrO2, the hardness would close ...