Very good in terms of construction, but you need to have a master's degree from NASA to figure out the screws and nuts. I bought extra ones of my own from a hardware store for better results.

I bought this particular one from Praktiker...It had everything you need to assemble it. As a product, I would say it does an excellent job...Sturdy as a sawhorse and you can put any wood or log you want to cut and it holds it firmly for comfortable cutting. I put masking tape on the legs so the sawhorse doesn't slip on smooth surfaces...I highly recommend it...Oh, and it folds up too so it doesn't take up space

Incredibly stable. I used it with logs of 50cm diameter and with small olive branches. It is worth its money and even more

Very good product, with the ability to cut wood of different diameters, although it is more stable with the largest opening. I have not yet experienced the problem of the side plates coming off (yet) that a friend above mentioned.
Unacceptable assembly instructions (practically non-existent, hence the 4 stars), and I don't know if I assembled it absolutely correctly. They made me (re)appreciate IKEA's instructions.

The ultimate ally for multiple cuts with safety and ease, since they are done at the proper height and cleanly.
The teeth hold medium and large diameter wood satisfactorily.
No problem with the fact that it is metallic, you just need to be a bit careful not to hit it with the chain, though there are no serious consequences, as I found out from 1-2 initial oversights. Besides, during cuts we should always maintain full concentration.
What I noticed is that because it moves during cutting, you need to place your foot on the diagonal support so it stays still.
Then you might ask why 4 instead of 5 stars?
Simply because the width supports, which have 3 selection positions, as they are made, often come out of place and it is annoying. I will have to replace them at the first opportunity with through bolts to make a small optimization to this useful tool.
Update 10/25:
The modification was done with bolts and now it is very stable!

An essential tool for cutting wood, it is quite sturdy even for large logs. A bit of hassle with the assembly but overall it is very convenient.