Rebound Board Table Tennis

This is a table tennis rebound board (return board).
I purchased it about 2 years ago and used it twice.
After use, I cleaned it and wrapped it in plastic wrap for storage, so I believe there is little deterioration.
I am selling it because I no longer have an environment where I can practice.
The storage location is indoors, but since it was used in a parking lot, there are some minor scratches on the casters.
It has 3 levels of angle adjustment and is equipped with movable casters.
As shown in the photos, there are also accessories for practicing on-the-table shots.
There is no instruction manual (perhaps it wasn't included from the start?), but it is simple to assemble. It can be assembled with 10mm and 12mm wrenches.
Please refer to the photos for assembly instructions.
The size of the board is slightly longer than the size shown in the photo (around 54cm).
Please judge the condition from the photos. As this is amateur storage, please refrain from purchasing if you are concerned about minor details or are looking for a perfect, pristine item.