I got these bongos just to play around and develop some percussion skills. Given the price, I was not expecting a super product, but I got dissapointed for these reasons:
1. The instrument does not come with a turning key. Thus, when you get the instrument out of the box, you cannot play with it nicely until you get a tool. I complained to Thomann about this issue, given that in one of the reviews (from 2014), someone mentioned that the bongoset came with a turning key. Thomann fastly replied and told me that the instrument does not come with the key anymore. So, be aware that if you get it, you also order a turning key (these are very cheap).
2. After the second use, the "metal" strip on the bottom of one of the bongos came out. This was because the nails that keep together the strip to the wood were loose. I fixed it by changing the position of the nails (using a hammer).
3. After tensioning the leathers, the metal structure started to bend.
It is a cheap instrument with poor quality materials. I would advice to spend some euros more and go for a better option.