This conch shell is made under the supervision of a Yamabushi 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 seek perfection. Regarding transactions, no claims and no returns are accepted. It is also listed on other sites, so please understand that the listing will be removed once it is sold. SPEC Wooden mouthpiece with lacquer-style finish, blowing hole diameter 18mm The taper of the mouthpiece is deeply cut, and a 6mm pipe is inserted, making it relatively easy to produce sound. Length: Approximately 25cm Width: Approximately 11.5cm Weight: Approximately 265g