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
0.338
Package weight: 0.386 kg
Product Size(L x W x H): 7.30 x 7.30 x 6.00 cm / 2.87 x 2.87 x 2.36 inches
Package Size(L x W x H): 10.50 x 9.50 x 6.50 cm / 4.13 x 3.74 x 2.56 inches
Package Contents: 1 x Wrist Ball Roller, 1 x String