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powerball Grip Trainer 250hz Pro Orange



The fastest and most perfectly balanced hand gyro range on earth - capable of reaching speeds in exc
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powerball Grip Trainer 250hz Pro Orange
The fastest and most perfectly balanced hand gyro range on earth - capable of reaching speeds in excess of 15,000rpm all powered simply by your own hand! This superlative instrument comes complete with a digital speed meter to allow you monitor your power...

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