I watched videos in comparison with other brands except Hilty, Milwaky, and some others. Dewalt 18 brush is the most resistant and corresponds to the declared characteristics. Pros: I bought it from my hands on 10/20/22 brought from Finland for 8500 ! R. Batteries 2/ 1.3 . Ah included were produced at the beginning of covid 04/10/2022. Still keep excellent tried with Akk on ebay 5 a. H. (fake) the same working time drilled both a hole in the foam blocks 1.3 native against 5 with ebay ! The device, although outdated, is a proven classic. I compared it with the brushless Melwoky 12 V so Dewalt, although heavier, is not so abstruse and is clearer in operation. I am very pleased with my first Dewalt. Often doing repairs where you need to quickly fix something or redo the interior. Different cons: the price turned out to be super, the Melwoky ratchet works well, it’s not at all clear.