Gym Power Twister
Product Description:
- Product Type:Gym Power
- 100% Brand New And High quality
- Material: Spring
- Arm Exerciser Grade: 30kg
- Function: Body
- Arms bent, curved spring force in the back of the neck
- Arms forward and upward bending of the spring, then relax
- Arms close to the chest, bending the spring, then straight, slowly relax
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