Welcome to The Gong Shop!
Hmong Shaman Gongs, also called Gou Gongs, range in size from 14" - 22".
These Hmong Shaman gongs are very thick, with a turned edge/lip, resulting in a fundamentally focused sound, which a little bit of crash. Shaman gongs have a very controlled crash, so you can play the gong with rapidly repeating strokes to produce a nice hum sound.
These are the preferred healing gongs for Chinese, Vietnamese and Cambodian shamans.