... christmas gift ceramic knife 1,Stain & Rust Proof; 2,Heathly,Hygince & Anti-Corrosion; 3,Certificate:SGS, FDA,LFGB; 4,ISO Color handle ceramic ... knife set, best gift choices for Christmas, Mother's Day and for ... .6Thermal conductivityW/(m .k)3.0Features: Our ceramic knives are made of ZrO2, the hardness would ... to you. Thank you.. Best Christmas Gift Ceramic Knife Set