Stays Sharp, Pure & inert, Hygienic, Ergonomic handle, Rust resistant, Light-weight OLLE Ceramic knives are made from an enhanced ceramic called zirconium oxide, which is the second hardest material only to diamond.Care Instructionsl Always use with a wood or plastic chopping board. Avoid stone, marble glass or tile chopping boards.l Ideal for vegetables, fruit and boneless meatsl Avoid dropping ...