I have various other items for sale too! This is a thick-shelled, Shugendo conch shell. It's approximately 33cm long and weighs 903g. I've confirmed that the conch shell can produce a 5-note scale (Oto = 2 notes: wood and fire), (Koto = 3 notes: earth, metal, and water). ♪^o^♪♪❣️ Please take a look at my profile! ^ ^♪♪ The mouthpiece hole is about 6mm. There are natural growth marks. There are no cracks. Please check the photos! ^ ^♪ Free shipping nationwide! ^ ^❣️ Although small, it produces a powerful tone♪ It's thick and sturdy!❣️ If you need a beginner's text on how to play the conch shell, please write in the comment section. The price is based on the cost of the shell.