It is a versatile knife called Funayuki because fishermen Mr./Ms. brought it to their boats. It is popular for its crisp and pleasant sharpness. The blade has a three-layer structure, the outside is stainless steel that does not rust easily, and the center steel is made of blue paper super, which is a hard steel that lasts for a long time. The blade is attached so that it can be used immediately. Because they are handmade by artisans, no two are exactly the same. Size and weight are approximate guidelines. The pattern is made of natural wood, so the grain and color of each tree are different. It can be resharpened at home and can be used for a long time.