ITEM NAME:2Pcs Stress Hand Wrist Natural Jade Ball Health Hand Massage Ball BallHT 3 Bj.2pcs Exercise Stress Balls (With Case). In addition to relieving stress, Chinese Health Balls, also known as Baoding Balls are known to. Type:Exercise Stress Balls. Ball ï ¼Å¡as shown. Two or more Baoding balls are rotated repetitively in the hand to improve manual dexterity.