Power Wrist Gyro Ball AUTO Start Gyroscope Ball Wrist and Forearm Exerciser Arm Strengthener for Stronger Muscle and Bones (Blue+Counter)
- Pump, hypertrophy, rehab, prehab and wrist/grip strength all in one: They’re great for rehab and prehab regarding wrist, grip and forearms, so all grip trainers should have one on standby
- Small, compact exercise machine you can take ANYWHERE
- AUTO START, NO STRING NEEDED! with internal pre-tensioner, incredible high speed up to 20,000 rotational speed per minute pass through testing
- Added counter keeps track of Current speed in RPM, Historical top speed in RPM and Physical strength index















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