Made from high-tech zirconia, ceramic blades are known for their hardness and durability. They last up to 10x longer than steel. Zirconia, the key material in advanced ceramics, is chemically inert, non-porous, non-stick and impervious to acids, salt, and rust. Chemically inert means no impact or reaction with what you're cutting, as well as a strong defense against harmful bacteria. They are now used for medical purposes as well as in the food, textile and automotive industry.