Powerball, the gyroscope ball that packs Power Available from NSD Powerballs

Using Powerballs will increase wrist and grip strength

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NSD Powerball RPM Counter

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Price: £11.99

The standalone RPM Digital Speedmeter can be added to the 250 Hz Regular and Neon Regular Powerball models. It simply clips in on top, in place of the existing plastic disc. Time to find out just how fast you can spin that Powerball....?

The standalone RPM Digital Speedmeter can be added to the 250 Hz Regular and Neon Regular Powerball models. It simply clips in on top, in place of the existing plastic disc. Time to find out just how fast you can spin that Powerball....?

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