This is the YH-3000 Series 135mm paring knife. It features a hammered beautiful "Tsuchime" finished, clad-blade which has extremely sharp Aogami-2 (Blue steel #2) cutting core w/ SUS-410 stainless steel provides excellent edge retention, HRC 61-62. "Tsuchime" finish can also make foods release quickly from the blade. Beautiful finished black plywood handles are basic and simple shape that are excellent grip and wear well. Half tang constructions with stainless bolster. Proudly made in Seki, Japan.