Wirst sports crazy ball Wrist ball with NEON&counter Increase strength of fingers,wrists ... , tennis, squash, cricket, badminton, baseball, bowling, basket-ball,, motocross, mountain climbing.2. Increases strength in fingers, wrists ... by degrees and rehabilitates sore muscles and joints.5. it can make the circulation of the blood ... be broken fitness exercise wrist exercise ball with light and counter