High quality PP plastic,Non-toxic,moisture proof, dustproof,sturdy and durable. The items stored in the box can be clearly seen for easy finishing. Outside dimensions:3.46" x 2.36" x 0.82", Inside dimensions:3.26" x 2.12" x 0.7". Can be great for organizing small items,small parts,crafts, beads, coins, jewelry, battery and others. You can number each box, which will greatly improve the efficiency of your work and study.
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