The block itself is perfectly ok. He has a firm footing is extremely difficult and tilts not even at full load.
The scissors slot at the bottom is actually too short (only 5cm deep) there hineinzustecken to something meaningful.
The slots are open at the bottom, so there are no crumbs etc. settle, but to do the knife anyway always clean in the block. Anyway, you can accommodate long knives only in the top slots by the lack of soil. The top slots are 24-26cm deep, thus providing also a long bread knife (the Kai has a 24cm blade) space. The lower slots are 22-19cm deep. (See uploaded photos)
Which knife exactly the wood is suitable and whether the slots inside are smooth inside enough, I can not judge.
What terrible is ok: The slots are completely different than in the picture, other sizes and arrangement (see uploaded photos). I was lucky that I am still happy with the arrangement as I got it. But it seems to be very different versions and actually the slot arrangement and size is indeed the most important purchase criterion.
Nevertheless, the product gets 4 stars because I was lucky with the slot arrangement, the product is otherwise fine and the value for money is very good (normal cost from blocks 50, the Kai from 100).