Meditative rituals the world over have long used rhythm to calm the conscious mind. Just hold the ball from the bottom and slowly tap on it to make a transcendent knocking sound. 

With its tapping stick and hollow sphere, this Wooden Fish Mu Yu Percussion Set imitates the sound of drums used by Buddhist monks.

The instrument is carved with fish scales on its top, and a carving of two fish heads embracing a pearl on the handle to symbolize unity.

In Buddhism the fish, which never sleeps, symbolizes wakefulness to remind chanting monks to concentrate on their sutra.