Me too. I bought some individual pieces, not set.
The tools look very good, they feel robust and have a bright steel finish,...but the edges are not sharp enough.
As # Atom # 28 says the concave cutter do not cut the wood, compress the branch. There is no clean cut, which helps close the wound.
I'm sorry, but they work like the Amazon Starter Set. Poorly
To get better cuts, I used a tungsten sharpener.
I bought my old
Tian Bonsai for a few dollars more and there is a huge difference. Also cheap and in stainless steel. But they cut like a barber's blade
.