You can find this ball on eBay: http://www.ebay.com/itm/130628229810
Show you how to start a power gyro wrist ball with one hand (without string)
If you a badminton lover you definitely need this tool to strengthen up your finger, wrist & forearm etc., power up your shots & prevent injury. I train with it for couple of weeks and my wrist don't hurt that much anymore even using backhand shots. Actually you don't have to go so fast, keep at the medium speed and train for 5 - 15 and it's already good enough. You will see the difference after train for a month.
If you have a sore wrist while using computer mouse like me, you should give it a try. It's really helps me!!
Finally got my powerball with speed meter today (20 July, 2011), my top speed only 11,888 , I know the powerball world record is over 16,000. My goal is 13,000.
Thanks for watching & Please subscribe my channel!!!
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You can find this ball on eBay: http://www.ebay.com/itm/130628229810
Facebook page: http://www.facebook.com/wristball
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