The Denka no Hoto knives, crafted by renowned blacksmith Teruyasu Fujiwara, are a testament to exceptional craftsmanship and unparalleled performance. These rustic hand-forged knives feature a core of aogami super (blue super carbon steel), sandwiched between softer stainless steel. This construction yields a blade that combines the acute sharpness and edge retention of carbon steel with the reduced maintenance concerns associated with rusting and oxidation compared to iron cladding. While the blade's impressive Rockwell hardness of around ~65 ensures exceptional edge holding abilities, it will take more time and patience to sharpen. The Denka no Hoto line features an amazingly thin edge (very high-performance) that makes you feel like you're using a laser in the kitchen. Though with great power comes great responsibility; the Denka no Hoto line is not for a user without the gentle technique that the thin edge demands (otherwise it can micro-chip easily). We say this knife requires utmost respect and care so it can perform the way it was meant to, to flabbergasted customers testing this knife at the shop. If you are ready to commit to the highest level of cutting performance, the Denka no Hoto line from Teruyasu Fujiwara is the one for you. A petty (utility) knife probably gets used most often after your all-purpose knives. It can be used to cut small fruits, vegetables, and even some smaller cuts of meats (any many many more things, like cutting through plastic wrapping from a grocery trip!) If you have one, for a quick meal for two, you may just get it done without a chef's knife. Brand: Teruyasu Fujiwara 藤原 照康 Blacksmith: Teruyasu Fujiwara 藤原 照康 Producing Area: Tokyo/ Japan Profile: Petty Size: 85mm Steel Type: Carbon Steel Steel: Blue (Aogami) Super, Soft Stainless Clad Handle: Ebony & Buffalo Horn Ferrule Octagonal Total Length: 219mm Edge Length: 95mm Handle to Tip Length: 109mm Blade Height: 24mm Thickness: 2mm Handle Length: 110mm Weight: 67g Hand Orientation: Ambidextrous Hardness: ~65HRC