The Iron Chef AmericaR 5-in ceramic Santoku knife has a zirconium oxide blade for extreme hardness. The extra-sharp blade is designed to hold its edge much longer than traditional steel knives. The blade is stain and rust proof and easy to use with a lightweight silicone handle.Features Include:5 inchesCeramic Zirconium oxide blade Extra-sharp blade Stain and rust proof Silicone handle Non-stick, easy-to-clean, and more hygienic than traditional steel knives Stain and rust proof and impervious to food acids, which means no metallic taste or smell will be transferred to your food Arrives in an Iron Chef gift box which can double as knife storage