Total
Handling
Stability
Quality

Good quality but

It is a product with very good quality, the stability is just brilliant but at the moment of adjusting a height, for lower heights, it might be a problem. For example, now I need to buy a piano bench that needs to be higher than 52 cm, because otherwise, with my piano Thomann DP26 is uncomfortable to play it.

As said, amazing quality but a bit of lack of flexibility for lower heights.