This Gohumanosuke Yoshiro Deba has a Japanese White Oak octagon handle with a Water Buffalo horn bolster affixed and a matching White Oak Saya cover. Designed for butchering whole fish, its thick spine, heft and broad profile allows the user to cut through fish bone easily.Gin-san, also known as Ginsanko is a high performing stainless steel. Yoshihiro master blade-smiths use traditional forging methods mixed with modern techniques and strengthening elements of Carbon, Chromium, Manganese, Phosphorus, Sulfur and Silicon. The result is a knife that sharpens with ease and holds its edge. Extremely user friendly, Gin-San is a popular blade choice for single-bevel knives among all ranks of chefs.