Haven't tried them but they seem solid and the hinges aren't broken. Some of the ones I've bought in the past are too fragile and light. They are in good shape and a good size. I like the design. I want to use them for necklaces and bracelets. I like buttons because I think they are easier to put on than a screw cap which is sometimes difficult to put on by yourself. In my opinion they look more elegant. I will most likely order again if I need more.
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