The core steel these knives utilize is Blue Super carbon steel. They will hold an incredible edge for a long while (one must keep clean and dry it often to prevent it from rusting, and a benign discolouration will form regardless). 

We highly recommend these Ohishi blades as gifts for culinary students, professional cooks, young professionals moving into their first apartment, newly weds and more!

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: Ohishi 大石
Profile: Petty
Size: 135mm
Steel Type: Carbon Steel
Steel: Blue (Aogami) Super, Soft Stainless Clad
Handle: Pakka Western
Total Length: 240mm
Edge Length: 135mm
Handle to Tip Length: 138mm
Blade Height: 28mm
Thickness: 1.7mm
Handle Length: 97mm
Weight: 99g
Hand Orientation: Ambidextrous