I have various other items for sale too! This is a Shugendo conch shell. Length is approximately 37.5cm, weight is 1052g. I have confirmed that the conch shell can produce five musical notes (Oto = 2 notes of wood and fire), (Koto = 3 notes of earth, metal, and water). ♪^o^♪♪❣️ Please take a look at my profile. ^ ^♪♪ The mouthpiece hole is about 6.5mm. There are natural growth marks and limestone, etc. There are no cracks. Please check the photos ^ ^♪ Free shipping nationwide ^ ^❣️ 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.