Pros: The box is comfortable. The price is reasonable in my opinion. The quality of the bits has not yet been tested. The bit holder has a large backlash. The drills are sharp, but hold the edge weakly. Got cons: Drills constantly fly out, you need to come up with some kind of payer. At the same time, battles must be taken out with considerable effort. The drills themselves are fragile 0.5 broke after five drillings. There was a better opinion about the matrix.