A dynamic ball requiring constant rhythmic gyrations to perpetuate the spinning ball - thus generating muscle tone and growth in the shooter's wrists and forearms
Lightweight, for use anywhere, any time
Equivalent torque of 15 kgs and 10,000rpm
With quick-start pull-cord
Model with light effect:
Gyro-Twister X beam
Same as above, but larger and heavier for a greater muscle tone and for bigger more muscular shooters
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