Fitness Arm Training Auto-Start Grip Strengthener

Description
Free your hands, strengthen your power while relieving stress.
Single-handed for wrist strength, dual-handed for arm strength.


Push down to the bottom along the arrow, effortlessly activating the open ball core.
Mechanical power, no need for electricity.
Size.
Additional Information
| Color |
BLACK, BLUE, RED |
|---|
Fitness Arm Training Auto-Start Grip Strengthener