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NSD Powerball Regular the NSD powerball basic version with powerball speedmeter
Same powerball nanosecond / NSD other logo.
If you're looking for the ultimate product to develop serious hand grip and forearm strength then look no further than the NSD Powerball.
Introducing Powerball - one of the most unique and dynamic products available on the market.
Explosive, dynamic, exciting Powerball: 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 Powerball: It's about the same size as a tennis ball and weighs just a little more, but take a 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
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