I bought these two months ago and hang them on my kids pull up bar. At first I could only do three pull ups. After using a atomic rubber band and doing high reps I can now do several reps and 15+ pull ups without the band. My grip strength has improved. My four kids have also had significant improvement.
Good service and communication.
I've purchased a number of holds and balls and the quality is much better than holds I packed up on Amazon. Would recommend this size for an adult medium size hand.
8/19/2015 9:01 PM
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