I have various other items for sale too! This is a conch shell. It's about 31.5cm long and weighs 446g. It's light, but it produces both Otsu-on (low tones) and Kou-on (high tones) very well. Please take a look at my profile. ^ ^♪♪ The mouthpiece hole is about 6mm. It has natural growth marks. 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.