Glass Hardness Tile (Educator's 10-Pack)

$15.00 $12.75

Save 10% with this 10-pack of our glass tiles. Testing mineral hardness is easy and safe with our substantial 1.5" x1 .5" glass tile. The tile has rounded edges for kids' safety, and at 1/4" thick, it won't break when being used during testing and will also survive the occasional drop to the floor.

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