ok if you have never seen this item…then ill show you…its a ball that when you spin it..it can genarate a force of about forty pounds..( with the small balls) with the big one the siver ball? much more force, it can make your hands strong, and aslo imrove your grip, you just have to do it to see what its like…im sure a hand full know what it is, and some will be new to it….but you have to get it! the way it makes you feel is crazy..its a challange no matter what, you can act like your picting..thrwowing a item while you spin it, mimic punching..its a workout that will fit in your pocket
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NSD power ball workout

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