Excellent set, very comfortable step, as well as the case itself. The quality of sharpening and drills is very good. With a 11mm drill, I drilled a total of more than 30 centimeters of iron (corners, sheets of 12 mm each), the drill does not think to get tired. But still, you need to be able to drill - you screwed up the drill by 12mm, for the very first time it gave too much speed and as a result the drill overheated and instantly became dull. It is important to drill at low speeds and without overheating, if anyone does not know