The Karachi knife is, so far, the only knife which fully meets the strict requirements of the CHROMA inspectors for a TAKUMI knife without being manufactured in SAKAI. CHROMA HAIKU Karachi knives meet all the requirements of a TAKUMI knife. Upon delivery, the blade already possesses a breathtaking keenness, and, as with all TAKUMI knives, by regrinding with a good grindstone, its cutting capacity can be raised to a level that is practically unattainable for traditional kitchen knives. A "sandwich construction", produced with a core made from extremely hard, blue AOKO steel which is subsequently protected by softer layers of iron, makes it possible to achieve an optimal hardness of 61° HRC at the cutting edge. The Karachi knife owes its archaic character to its place of origin, the Tisa region in southern Japan.