This is a conch shell made under the supervision of a Yamabushi (mountain ascetic) priest. It's a portable size for mountain climbing, and could be used as a bear whistle! Regarding the production, it has been thoroughly cleaned, disinfected, and processed, but it is a natural item. Please refrain from purchasing if you are sensitive or seeking perfection. It is also listed on other sites, so please understand that the listing will be removed once it is sold. Regarding transactions, no claims and no returns are accepted. SPEC Wooden mouthpiece with Kinran (brocade) decoration, blowing hole diameter 20mm The taper of the mouthpiece is deeply cut and an 8mm pipe is inserted, making it relatively easy to produce sound. Length: Approximately 34.5cm Width: Approximately 14.5cm Weight: Approximately 643g