The drawer lacks rigidity if the surface is uneven, the grooves do not converge and the locks do not close. The docking system bites in the closed position and the boxes are very difficult to disconnect, and it is impossible to open the boxes in the docked position. The locks of the docking system are soft and, from attempts to disconnect the boxes, they began to deform and turn white, as if they would soon come off. This is a household series, and if you get boxes once every half a year, then it will do, but for that kind of money you can find better