Reply to Convert your Traktor S4 Flightcase into a travelcase

The flightcase weight including the Traktor S4 itself was kind of heavy, so I bought two wheels and a level, modified so I could use the flightcase as a normal traveler case.

Here are the result;

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Update #1
Thanks for all feedback!
Below can you find one more picture of the Flightcase with both parts merged.
Picture #5

The total costs of the two wheels and the level itself;
- Level