Few folks could have imagined that a polycarbonate sphere about the size of a tennis ball would change the way people workout and recover from injuries forever. But that s exactly what happened with the incredible popularity of the patented Dynaflex Gyro. As a result Dynaflex International has gone on to established itself as a leader and innovator of fitness products. Whether you re a weekend athleteor simply want to improve the way you look and feelthe Dynaflex lineup of exercise gyros represent the fitness breakthrough you ve been looking for! So small they go anywhere. Yet so powerful you ll SEE and FEEL tremendous results in minutes a day!The Powerball generates 35 lbs of torque with speeds up to 13 000 RPM. The faster the unit runs the brighter the lights will be until the whole hand is engulfed in a bright glow. Just when you think you ve seen it all along comes the ultimate hand wrist and arm exerciser.- SKU: DFLX012