After my old drill were absolutely no longer be used and only scratched the surface in the truest sense of the word, I looked around for new drills and am here at the Blue Granite drills find anything. The delivery was very quick even after Austria - 5 stars for Amazon. In the field test, the drills have proven quite. They are compatible with any standard chuck. In normal masonry it does not even need some the hammer drill function of the drill. When installing ceiling lights where my old drill failed entirely in the end, these drills have set the holes easily. The packaging of the drill makes a high impression. Important bore diameter are also duplicated. Comparing to many 100-piece drill set at half the price of the Blue Granite drills I can not do unfortunately have to pay (I afraid to buy such sets), but dare the hypothesis that the supposedly more favorable product end up being more expensive and when drilling has far less fun than with this Blue Granite drills from Bosch. From my side there is a clear recommendation for this drill.