In general, an ordinary percussion drill. But for Bosch, which I have always considered a model of a good tool, this is just a failure. The main problem is the beating of the cartridge. Because of this, it is problematic to start working with large drills. On a steel sheet, they break off from a pointed point, on a wall they simply crawl along the surface until they go deep at least a little. As a result, instead of a neat hole on the wall, a peeled penny a few centimeters in size remains. It does not affect the convenience or the quality of work positively. With thin drills a little easier - they go deeper faster. Unfortunately, this is not the only problem. Reverse is over. However, this is important for deep holes or for a screwdriver. Due to the beating of the cartridge, the latter is almost impossible. Do not screw in a long screw without a pre-prepared hole - it dangles. In addition, according to the instructions, this drill should take concrete. Doesn't take. Brick, of course, wood, all sorts of foam blocks, cinder blocks - drills normally, but on a concrete wall it just starts to kill - if you do not press, then the drill starts to heat up, if you press very hard, it may stop - there is not enough power. The blow is weak, it helps far from everywhere - after all, this is not a perforator.