For this price it's a decent set. You can even take 2 of these if constant threading is required. For myself, I do this - I make a hole a little smaller with a DeVoltian drill, after that I drive it with these taps. It turns out well!
Pros
The price is similar, if not cheaper than the same Ali, but arrives in a week, not a month!
Convenient for fast threading, where, for example, conventional metal screws stupidly cannot. It is also more convenient to tighten and drive nuts
Cons
Well, let's start with the fact that sharpening and quality are clearly not dewalt . That blunting of the cutting edge is a matter of time