Just a box with a snap on lid to store brad nails in one convenient container that's easy to open and gives quick access without having to fiddle with those little cardboard boxes. Each slot will hold a full standard box of 1000 nails. The divider in the 5/8 slot is to keep them from falling down and laying horizontal in the bottom thus eliciting negative emotions upon use.

I've included STL's both with and without the text as well as a Step file if you want to mix it up.

I printed it with 2 walls, 2 bottoms, 5 tops, and 10% cubic infill and it fits together nicely. With it full I can pick it up by the lid and shake it around gently without the bottom falling out, but the top comes off easily when pulled with two hands.