I have various other items for sale as well. This is a large conch shell used in Shugendo (a Japanese mountain ascetic practice). It is approximately 38cm long and weighs 855g (^.^) ♪♪♪❣️ The mouthpiece hole is about 6mm. It has natural growth marks. There are no cracks. Please check the photos. I have confirmed that the conch shell can produce a 5-note scale (2 notes of Otsu-on = wood/fire) and (3 notes of Kotsu-on = earth/metal/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. Free shipping nationwide❣️ The price may fluctuate depending on the cost of the shell.