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Total Customer Reviews: (6)
Seller: Amazon
WOW! Lights up inside when Activated. The Dyna-Flex powers up with the rising pitch of an F-18 fighter -with no batteries, no motor.We dare you to hold on to it! Give it a quick pull or thumb flick to get it moving. Rotate your hand. It starts to race and hum. Soon it's whirling at over 9,000 revolutions per minute! Meanwhile, your wrists, grip, an[Read More]
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