Well these are strong tubes, they don't bend. And the lids won't come off accidentally. So if this definition fits your needs, they should work fine for you. However, I bought to store beads. Definitely NOT FOR A PEARL. Removing the lids is so difficult that when the lid comes off your beads will fly all over the place. The other reviewer is right about the bead storage and you can read his review. Again, NOT FOR PEARL STORAGE. I returned them all.
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