Self-Starting Wrist Ball, Mute Centrifugal Gyro Ball, Arm Strength Training, for to Relieve Stress Entertainment (Color : Style 2) (Style 2)

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About this item

• 【Stainless steel core shaft】The core shaft with strong hardness is used, which is not easy to deform and runs stably. The ordinary shaft is easy to bend after the ball is dropped, resulting in vibrations in the hand and big sound defects.
• 【Good for health】It can effectively alleviate musculoskeletal pain caused by long-term use of wrists and arms, and can also help fitness enthusiasts to carry out targeted strength training, Can be placed in the accompanying bag when not in use
• 【Centrifugal force rotation】Pure mechanical design, the rhythm and speed of the core rotation can be adjusted arbitrarily through human control. The faster the speed, the greater the force generated.
• 【Variable speed lights, gorgeous and diverse】As the speed of the core increases, the internal light-emitting strips will be more gorgeous, increasing the fun of exercise and experiencing the colorful rhythm
• 【Ling and small, carry it with you】Palm playthings can be exercised at any time, which has a good exercise effect for people who use excessive wrist strength, and there is no venue restriction