Approximately 33.5cm, approximately 1015g This is a very beautiful conch shell. It sounds great, both in its lower and higher tones. It's an easy size to carry, so please experience the charm of the conch shell in the mountains. The hole of the mouthpiece is about 5.5mm, so you can adjust the size of the hole by rolling sandpaper thinly. #ConchShell #Horagai #Shugendo