... never wore,always sharp Fashion and easy clean Zirconia, the row material of Ceramic Knife, stable performance, not easy to change, ... first requirement to manufacture a knife is high hardness. Steel knives’ hardness is Vickers HV700, ceramic knives HV1100. Therefore, because ... use, while the wear-resistant ceramic knives can always maintain the bright color. ceramic paring knife,4" white blade,black ...