I have various other items for sale as well. This is an extra-large Shugendo conch shell. It's approximately 40.5cm long and weighs 1025g (^.^) ♪♪♪❣️ The mouthpiece hole is about 6mm. It has natural growth marks. There are no cracks. Please check the photos. It's a beautiful, well-proportioned❣️ extra-large Shugendo conch shell (^.^)♪♪ I've confirmed that the conch shell can produce five tones (Oto = 2 tones of wood and fire), (Koto = 3 tones of earth, metal, and water). If you need a beginner's text on how to play the conch shell, please write in the comment section. I will include it for free. The resonance of the Oto is especially amazing ^ ^♪♪〜♪❣️ Free shipping nationwide❣️ The price may fluctuate depending on the cost of the shell.