Parallel Halo Power Wrist Ball Metal Gyro Ball AUTO Start Wrist Exercises Force Ball Gyroscope Ball Wrist and Forearm Exerciser Arm Strengthener for Stronger Muscle and Bones (Transparent+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.