For chiselling and drilling concrete with a crown, it’s still rather weak, but nevertheless it copes well with “breathing and a smoke break”! To work with a 60-70 mm cutter in concrete, I recommend making a central hole, mark a circle with a cutter and already make a number of 6mm holes around the circumference. I think that for frequent drilling with a crown - there are more serious models. Removing old tiles in the chipper mode is easy and convenient! If you follow the operating conditions and, in particular, do not forget about the lubricant for the drills, it will serve for a long time and properly! Recommended tool to buy!