Bunka 170 mm (6.7 in) SWType: Bunka Finish: Washiji Damascus Blade Length: 170 mm (6. 7 in) Construction: Awase Core Edge Steel: SW Steel (Swedish Steel) HRC (Rockwell Hardness): 60 Handle: Walnut Octagonal Bevel: Double Bevel Place of Origin: Tosa In recent years, the representative all purpose knife, much like the santoku, is commonly regarded as indistinguishable from santoku knives. Made with a sloping cut from its back towards its tip, it's similar to a kiritsuke in its