The HD line from Konosuke has the same dimensions as the White #2 line, but is made from a proprietary semi-stainless steel to provide that extra protection from discoloration. Care does need to be taken to prevent rusting, but these knives take on a great patina which will also help to curb discoloration. This 180mm Petty is excellent for meat trimming or as a smaller slicer. Heat-treated to an HRC of 61, these blades are attached to a stabilized octagonal Ho wood handle with a Water Buffalo Horn ferrule. As with all of our Konosuke knives, these come with the option of a matching saya.