This is a tungsten derner swivel sinker, 25-gou, made by Fuji Kogyo, which is difficult to purchase due to its scarcity. It demonstrates its true ability in situations requiring long-distance casting, such as tournaments and competitions. It has a higher specific gravity than lead, and the sensitivity is excellent! It is an essential item for surf fishing and Japanese whiting fishing. The package may be damaged, but it is a new, unused item. Please check the condition of the product in the images.