Review on Drill for metal, screw BOSCH PointTeQ 2.608.577.351, 19 pcs. by Wiktor Ambroziak ᠌

Excellent set, with a step that is exceptionally pleasant, as well as the case itself. Very high quality can be found in both the sharpening and the drills. I used a drill with a diameter of 11 millimeters to bore holes in a total of over 30 centimeters of iron (corners, sheets of 12 millimeters apiece), and the drill shows no signs of becoming fatigued. But you still need to be able to drill; you messed up the drill by 12 millimeters; for the very first time, it provided an excessive amount of speed; as a consequence, the drill overheated and immediately became dull; you messed up the drill. For the benefit of those who are unaware, it is essential to drill at low speeds and avoid overheating the material.