Powerball, the gyroscope ball that packs Power – Available from NSD Powerballs
Using Powerballs will increase wrist and grip strength

NSD Powerball 250 Hz Regular Screamer

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Price: $29.99

The classic 250 Hz Regular Powerball with Screamer rotor for an enhanced jet fighter sound. Select Amber or Blue at Checkout.

The classic 250 Hz Regular Powerball with Screamer rotor for an enhanced jet fighter sound.

Select Amber or Blue at Checkout.

Supplied with 2 starter cords.

Lifetime Warranty & 90 Day Money Back Guarantee.