NSD Essential Spinner Gyro Hand Grip Strengthener Wrist Forearm Exerciser, Crystal

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 Steel Axle; Compatible With Nsd Digital Speedometer Sm-01 and Sm-02