JIN BD Wrist Trainer Ball Auto-Start Wrist Strengthener Gyroscopic Forearm Exerciser Gyro Ball for Strengthen Arms, Fingers, Wrist Bones and Muscles (Black Without Light)
- 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.
- Rugged, Long-Lasting Design — Made with a military-grade plastic shell, a break-resistant structure and reversible inner tracks for 2X lifespan.
- You can get a challenging, strengthening workout anytime, anywhere, even on your lunch break.