Powerball NSD Autostart Range - Hand, Grip, Wrist & Forearm Rehabilitation & Strengthening Gyroscopes (280hz Pro)

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• AUTOMATIC STARTING - The new Range of Autostart Powerballs are simple to use and no cords are required to get them started.
• POWERFUL GRIP STRENGTH – A highly-beneficial grip trainer for athletes and musicians alike, Powerball strengthens your fingers, wrists and hands for improved flexibility and finger dexterity making it a must-have product for climbers, golfers, tennis players, boxers and more, as well as guitarists, pianists, drummers, etc.