[steve threlfall]

Originally Posted by Powerballs

Explosive, dynamic, exciting NSD Powerball!
NSD Powerball is a dynamic and completely revolutionary new gyroscope that literally explodes with mind numbing torque and inertia once you activate its internal rotor.

Extreme NSD Powerball!
It's about the same size as a tennis ball and weighs just a little more, but take a NSD Powerball in your hand, set that rotor in motion with the cord provided (or use your finger when you get used to it) and you'll experience an extraordinary sensation:

Power ball slowly comes alive with gyroscopic force - a sublime yet pleasant resistance to your movement which is transmitted directly into your wrist and arms and which provides soothing, non impact rehabilitation at these lower speeds.

www.powerballs.com