Gyro Ball Arm Exerciser Strengthener - Not sold in stores

Strengthening your Grips, Wrists, and Forearms Begins HERE! Durable material, environmental, tough and harmless. Steel axis, not easy to deform and break. Lightweight and portable, you can exercise whenever and wherever possible. Suitable for those who need wrist training, such as sportsman, computer typist and pianist. How to use: 1 Holding the wrist ball with one hand, the opening part of the upward, the other hand will be the head of the rope into the hole in the center of the ball. 2 With the thumb of the hand holding the ball, turn the ball forward, the rope tightly wrapped around the center of the ball in the center groove. 3 When the rope around the center of the ball half a circle, stop turning the ball center. Use one hand to hold the ball, the other hand to pull out the rope quickly and let the ball center rotate at the fastest speed. 4 Immediately open the part down, with the wrist part of the ball, until you can feel the speed of the ball can continue to accelerate.

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