These are conch shell imitations made from Tsumetagai and Yatsushirogai shells, crafted to resemble a conch horn. Set of 2. They can be blown and produce sound, but it will be a small sound. They do not produce a sound as loud as a conch horn from the Sengoku period. Regarding the production, I have thoroughly cleaned, disinfected, and processed them. However, they are natural items. Please refrain from purchasing if you are sensitive or seek perfection. They are also listed on other sites, and will be removed once sold out, so please understand. Regarding transactions, no claims and no returns are accepted. SPEC Wooden mouthpiece The taper of the mouthpiece is deeply cut and a 6mm pipe is inserted, making it relatively easy to produce sound. Length: Approximately 10.5~11.5cm Width: Approximately 7~7.5cm Weight: Approximately 43~95g