Fitness Balls, Health Balls, Massage Balls, Feng Shui Goods, Stress Relief, ZHANGDONG Hand Exercise Fitness Balls, Chinese Balls, Health Balls, Meditation Balls, Hand-Carved Dragon and Phoenix Balls These are traditional Chinese health balls. They make a tinkling sound like a stringed instrument when shaken. This is a set of two balls: one with a golden dragon and one with a red phoenix. The balls are about 5cm in diameter and have a decent weight. They seem to be a health tool for relaxation by rolling them in your hand.