2 Pcs Hand Massage Ball Stress Relaxation Chinese Health Care for Exercise Fitness WHStore

Features:
In addition to relieving stress, Chinese health balls are known to improve joints and sleep.
Two or more balls are rotated repeatedly in the hand to improve manual dexterity and strength.
Beautiful decorated box included.
Best gift for our friends.
Made of durable material,anti-corrosion and wear resistance.
Specification:
Material:iron
Size: Diameter: 38mm / 43mm
Box Color:Random
How to use:
As you exercise, place two balls in your hand, with five fingers flexing and extending, so that the two balls circled with each other,the direction of rotation of the shun, inverse of the points, so that all joints in the hand are moving. With hand flexion and extension,
Exposure yield, front wall muscles can have a pace of contraction and relaxation. The hands can be alternate exercises,but also three or four balls at the same time spin, playing a few tricks!