These are conch shells that have been modified into conch horns. Set of 2. They can be blown and will produce sound, but it will be a small sound. They will not produce a sound as loud as a conch horn from the Warring States period. Regarding the production, they have been thoroughly cleaned, disinfected, and processed, but they are natural items. Please refrain from purchasing if you are sensitive or seek perfection. They are also listed on other sites, so please understand that they will be removed once sold. Regarding transactions, no claims and no returns are accepted. SPEC Wooden mouthpiece, lacquered finish. Blowing hole diameter: approx. 15mm, 22mm The taper of the mouthpiece is deeply cut, and a 6mm pipe is inserted, making it relatively easy to produce sound. Length: approx. 15cm, 14cm Width: approx. 8cm, 7cm Weight: approx. 167g, 90g