How about a rare, uniquely shaped driftwood? Uses: Free This driftwood can be used for a wide variety of purposes. Size: Approximately 36cm Driftwood with tannin removal treatment. Collected: 2025 Location: Chikugo River upstream, Fukuoka Prefecture Tannin Removal Process: High-pressure, high-heat cleaning Brushing Boiling sterilization at approximately 65°C (for about 2 hours) - We are particular about the temperature and time. Water soaking (30 days) (Using driftwood-specific super-activated carbon "Black Hole") Washing and brushing Sun drying Kou-chan's driftwood is finished and listed in about 60 days. UV sterilization If you have any questions or would like additional information, please comment. Many other items are also available. We have a large selection of high-quality, well-shaped items, so please take a look.