Kolor ID is Made in Spain using High carbon, nitrogen-enriched stainless steel. They use a One-piece precision-stamped blade for a lighter weight knife without sacrificing strength. They are Ice-hardened FRIODUR blade that stays sharper longer and has superior resilience. The handles have a Non-hydroscopic safe-grip (won’t absorb liquids) and use molded polypropylene handle safely up to 100 degrees C / 212 degrees F. Each knife comes with 6 color buttons to identify food preparation tasks prevent cross-contamination. All cutlery is Dishwasher safe.