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 ... Features:1) The balance of the rotor has been corrected by computer, so the ball has very excellent ... be broken fitness exercise wrist exercise ball with light and counter