Unit : Each

Strengthens each finger individually to develop maximum. power, dexterity and endurance.

finger-exercising
using instruction: handling method finger-exercising
Grip it exactly finger to finger, and practice finger by finger hand-exercising
practice powerfully with all your fingers and palms
using attentions
put your finger in the lower place
Please put it without children's reaching (their finger might be hurt if it falls to the gap)
Don't throw it randomly!

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