After very fast delivery I was skeptical at first, because it change the tires very tiring but was to loosen the screws. But, absolutely satisfied, the screwdriver moves very well and the noise level is lower than in the Druckluftschrauber.Durch the digital torque adjuster can meter the torque very well. The screwdriver is very good in the hand and he could also be operated with only one hand. (But you should not ,, for security reasons !!!!). A little melancholy droplets, the switch hooked something, but I think after repeated use, lays down the well. The trunk is okay and with the replacement of coal and the power nuts to get through first few years. The screwdriver makes a very solid impression.