Aliens

Rollerball

<p><b>ATTENTION - It's addicting!</b></p> <p>Power-training for hand, joints and forearms. The Rollerball starts to swing when moved in hand, and centrifugal forces of up to 15 kg develop, which take an effect on grip strength, hand joints and forearm. No batteries needed.</p> <p>Great exercise gadget for climbers, but also good for tennis and golf.</p>