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Roller Balls are efficient training utensils functioning in accordance with gyroscopic powers.
For arms, wrists, and fingers. Ideal for all forms of sport demanding a firm grip.
Also used in physiotherapy.
Roller Ball made of robust plastic. Started-up with the attached starting string, kept moving by rhythmic movements of the hand.
Evolving strong centrifugal forces, reaching up to 12,000 rpm.  |
