I have various other items for sale too! This is a Shugendo conch shell. It's approximately 34.5 cm long and weighs 935g. I've confirmed that the conch shell can produce five tones (Oto = wood and fire, two tones), (Koto = earth, metal, and water, three tones)♪^o^♪♪❣️ Please take a look at my profile if you'd like ^ ^♪♪ The mouthpiece hole is about 6mm. There are natural growth marks. There are no cracks. Please check the photos ^ ^♪ It's a size that's easy to carry. It's a solid and substantial Shugendo conch shell ^ ^♪❣️ Free shipping nationwide ^ ^❣️ If you need a beginner's text on how to play the conch shell, please write in the comments section. The price is based on the cost of the shell.