I just picked up some FatGriptz and have been using them with barbell and dumb bell training. I've only been using them for a few weeks so its hard to tell, but they sure are a work out for my hands and forearms. My left hand has always felt MUCH weaker due to a wrist injury I had as a kid, I think its finally starting to catch up to my right hand with these babies.
http://www.fatgripz.com/2014FG/index-FGbutonly.php?
They have them at Amazon with Prime shipping as well.
http://www.fatgripz.com/2014FG/index-FGbutonly.php?
They have them at Amazon with Prime shipping as well.
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