Superior double beveled knives from the famed Kokajikai knife makers in Sakai. These are true hand forged 9-layer Damascus Aoko Blue carbon steel knives. The double beveled blades have fantastic geometry and edge holding. Comes in a Paulownia wood box with a fitted saya. Interior style and color may vary. 33-layer 405 Stainless hand-forged blade with blue #2 carbon steel edge, hardened to 62-63 Rockwell. Double bevel at 50:50 angle ratio, fitted with a Japanese magnolia octagonal wa handle and water buffalo horn ferrule. CAUTION: All Carbon steel blades will patina through regular use and will easily rust if left wet. This is not a defect, it is a product of the material that comes with carbon steel's ability to take a finer edge, which is why it is preferred by many chefs. This is NOT a stainless steel.