NSD Power PB-688 Spinner Gyroscopic Hand Wrist Forearm Exerciser

Exercises Wrists and Hands — Spins at up to 15,000+ RPM to exercise and strengthen wrists and hands; You’ll feel the burn in just a minute of spinning
Smart Design — Patented NSD Power Spinner is small and compact but provides ample resistance via angular momentum for an intense workout; generate 26.8 lb-in of torque at 10,000 RPM
Simple Operation — Easily turns on via the included pull-string so you can pick it up and get started; Patented design comes in comes in an attractive color: Clear
Rugged, Long-Lasting Design — Made with a military-grade plastic shell, a break-resistant structure and reversible inner tracks for 2X lifespan
Easy To Use — No batteries required; You can get a challenging, strengthening workout anytime, anywhere, even on your lunch break
Precision Made by its inventor — Computer balanced inner gyroscopic rotor with Stainless Steal Axle; Compatible With Nsd Digital Speedometer Sm-01 and Sm-02