~Out of stock NSD Power Ball Roll-N-Spin Autostart Gyro Wrist Trainer and Forearm Exercise, Black 188A

Power UP your game to the next level!

Use the Wrist Trainer to increase strength of fingers, wrist, hand, forearms, biceps, triceps, ligament and shoulders.
It is small and portable, making it convenient to be used anytime and anywhere.

No starter cord or external battery powered aid needed! Using the Spinner to strengthen your wrist and arms easier than ever! The Roll ‘n Spin Spinner incorporates a pre-tensioner inside the gyroscope that allows for a simple roll back to spin up the gyro with enough momentum to get you started.

• Autostart with internal pre-tensioner, just roll back the rotor in the direction of the arrow on the rotor or against the internal resistance, when sufficient tension is achieved, release and enjoy!
• Computer balanced inner gyroscopic rotor for VIBRATION FREE operation at up to 15,000 RPM
• PATENTED Design; Compatible with NSD digital speedometer SM-01
• Hard, impact resistant plastic shell that comes in an attractive BLACK
• Small, compact exercise machine you can take ANYWHERE.
• Provides up to 24.9 lb-in of torque at 10,000 RPM