Twist me
Twist me
Out of context: Reply #3
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- mitsu0
it's hard to explain becuase when you hold it and use it you realize what a work of science it is...
but there is some sort of swiveling component insite the ball that when you get it spinning correctly, creates an powerful resistance that in turn builds strength in your wrist and forearm as you try to hold it.
really tough to explain.