Wrist Ball Gyroscope Roller Force Strengthener Arm Exerciser - Orange Red - 3533975012

Features:
- Suitable for those who need wrist training, like sportsman, computer typist and pianist
- Lightweight and portable, you can exercise whenever and wherever possible
- Durable plastic material, environmental, tough and harmless
- Easy to operate and use, do not need the battery or charger, the rotated speed is up to 12000 RPM
- Steel axis, not easy to deform and break, a great tool for exercising your arm and wrist strength

Note:
- Be sure that do not touch the ball body when it is at high-speed revolving
- Keep clean inside of ball and avoid any minor articles
- Keep away from moist and watered places
- As it is precisely produced, never fall on hard surface