NSD Power Ball Roll-N-Spin Autostart Gyro Wrist Trainer and Forearm Exercise, Black
Brand: NSD
Product Code: PB-188A Black
Availability:   In Stock
Price: US$39.90
Quantity:  
   - OR -   

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

 

Power Ball Gyro
Max Vibration Free RPM 15,000 RPM (250Hz)
Weight 8.9 oz (252 g)
Torque at 10,000 RPM 24.9 lb-in
Features Computer Balanced Rotor
Hard Plastic Shell
Ergonomic Grip
AutoStart Internal Pre-tensioner
Colour Black

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Bought Apacs 9990 green. Its the third one I have bought. Personally I think the racket is brilliant for my style of play, power and control. It is a good compromise racket, not too stiff, headlight but able to provide adequate power. Has very good balance. The only downside was the stringing, poundage appeared accurate but I found the apacs string was not very good. On later purchase I requested yonex ultimax BG66 string.

It was well packed and came fairly quickly considering t ...»



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