The tools were doing this so far always reliable service and as yet none of them has been damaged in any way. Solely the water level was not set correctly from the beginning (but can be made up by means of screws).
The case is handy. In the upper half (Figure) all stuck in it, the bottom tools are only loosely in the trunk. Please keep that in mind when you open.
For the "normal" use-it-yourself (which is probably always defined slightly different) this case has, in my opinion an optimal initial supply of tools at a fair price. Have the purchase regret in any way.