I have various other items for sale too! This is a Shugendo conch shell. Length is approximately 36.5cm, weight is 708g. I have confirmed that the conch shell can produce five tones (Oto = 2 tones of wood and fire), (Kou-on = 3 tones of 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 ^ ^❣️ If you need a text on how to play the conch shell for beginners, please write in the comment section. The cost of the shell was high, so this is the price.