The high performance internal gyroscope reaches up to 10,000 rpm and is set in motion by a cord. All you need do is to increase the speed by making a rotational wrist movement and to keep in sync with the spinning of the ball.
Coordination while building strength. Improves grip, and strengthens hands, wrists, and arms without strenuous exercise. Ideal for therapeutic conditioning and rehabilitation of injuries. Increases range of motion of wrist flexors and extensors.
Perfect exercise gadget for sports like golf, tennis, squash, cricket, baseball, bowling, basket ball, motocross, mountain climbing.
Increase strength in fingers, wrists, hands, forearms, biceps, triceps, ligament and shoulders.
Great benefit for musicians, guitarists, pianists, drummers.