Ambrogio Sanelli Supra Knives Special Edition - Supra Colore. With HACCP-compliant colored handles, they further optimize kitchen work and make it easier to use the knives for specific types of food - making it easy to maintain sterile working conditions in the kitchen in compliance with hygiene and food safety regulations, and therefore with the safety of customers eating out. Color coding: RED: raw meat. YELLOW: meat or poultry after heat treatment. BLUE: Fish and seafood. GREEN: fruits and vegetables. PURPLE: processing allergen-free products. The blades are made of high quality NITRO-B stainless steel. Handles made of durable plastic. Handle paints according to the HACCP standard. The set includes a sharpener. Not dishwasher safe. Made from low carbon steel with a heavy chrome finish. Polypropylene handle. Hardness: 65 HRC core; about 72 HRC coating. Thickness: ø12 mm.