These boxes are small but I did expect that. The dimensions are accurate. You can remove some of the tabs to make larger sections. Excellent for small charms and beads. A good value. Similar products sell on Ebay but when you add up 4 of them they cost much more than this set. Also I didn't have to wait and wonder if they would get here from China. Amazon ships from USA. So far clasps are holding. The largest beads in the box are 8mm, the smallest are 4mm. I took a picture of the box open & closed so you can see how well you can see through the lid. The measurement is the longest dimension of the box.