NSD Power Essential Spinner Gyroscopic Wrist and Forearm Exerciser

Price: from $19.81

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Key Features

Patented Design; Compatible With Nsd Digital Speedometer Sm-01 and Sm-02 (battery-free version) Computer balanced inner gyroscopic rotor for VIBRATION FREE operation at up to 15,000 RPM Worry-free to drop; Impact Resistant structure with Military-grade plastic shell that comes in an attractive color: Amber Reversible inner tracks make 2X Lifespan Simple to start with a pull-string (included), see video for tips and tricks