I used these along side professional level mallets and there is not much difference. They cost a fifth of the price, and the actual balls on the top are pretty much the same. The big difference is the stick aspect of the mallet, which is made of a fairly cheap feeling wood, but this doesn't bother me to the extent of spending much more money on money on them.
For my purposes, which playing on cymbals and schlagwerk wooden percussion - these are absolutely fine, basic mallets. And most importantly, half the price of anything else. They are not particularly soft, but they do they job.
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