Newly style dumbbell, you just rotate the steel ball and the Centrifugal force will twist your arm !
The faster ball rotating, the stronger strength you will feel.
Packing: 1 pc / color box (25 * 5.5 * 25 cm)
Rolling Ring
| Model/Item No. | Material |
|---|---|
| EVA_830 | Plastic, Iron ball |
| Country of Origin | Color |
| Taiwan | Blue, Pink, Grey |
- Product Specifications
- Features
- Newly style dumbbell, you just rotate the steel ball and the Centrifugal force will twist your arm !!!
- The faster ball rotating, the stronger strength you will feel.
