This is a copper fish-shaped medicine grinder (also called a medicine mortar), a traditional Chinese medicine tool used to grind medicinal herbs. The grinding rod and roller: the round wheel in the middle of the long copper rod is the core component used for rolling and grinding. These types of copper medicine grinders were mostly used in old Chinese medicine shops, and those that have survived to this day possess both practical and collectible value. Dimensions: Height 10 cm, Width 22 cm Total Weight: 1000 g