Before this tool box I used to keep my tools in the storage bin, which is very inconvenient every time when I need to look for something. It came assembled besides the wheels which are easy to put on, and the small tool box is perfect for all the loose screws and parts! It’s little bit smaller than I expected but After I put everything in I still have plenty room left. And the small box can fit in the door or left on top, which like what I did in the pictures. I really like the way it looks, and you can see how nicely it looks when the doors are closed! Over all I like it very much!!