
I use them to store rocks for my rock tumbler. They hold up well for this but I'm not stremgth testing them. Im loading them sparingly. I like the nice fit of the lids. The plastic the trays are made out of is of medium thickness and durable. The glossy black finish gets scratched up but that's certainly understandable and acceptable. I like that the lids do not lock on. It's make simple to peek inside and see what's in there. All in all, I wish I had more of these.

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