What do you mean by this question? Do you mean - "do these weights really change weights with a twist of your wrist?" Yes! It's very easy to have a range of either 10 to 90 lbs or 5 to 52 lbs within a few seconds.
Maybe you mean... " Are these weights going to give me results? " Just like anything else you have to USE it to get results. If you use the weights you can get amazing results!
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