What I thought when I took this "impact drill", I honestly do not know. Into darkness, apparently. When I noticed that there was only one speed, I immediately realized that I had probably bought the wrong thing, but I thought: Bosch, after all! But alas, besides the fact that there is only one speed and it is impossible to use it as a screwdriver (although it is in the name in the advertisement for NM: impact drill screwdriver). The speed control is still not enough - it didn’t work out for the self-tapping screws to set it up. The cartridge is bad frankly. Clamps disgusting - drills fall out. Tightening harder is not possible under any circumstances. This is especially noticeable when trying to drill a brick (we are not even talking about concrete, forget it) wall - the drills fall out even faster . And there is very little impact power. What is the result? For a lot of money I got not three in one, but an ordinary drill. Unjustified purchase.