I purchased this drill cassette as all-purpose weapon for home. For comparison, I have purchased the HSS-R "Promotion" set of Metabo at about half the price. I use this drill well - or even mainly - for wood and plastic. In contrast to the "rolled" Metabo drills this Projahn drills are extremely sharply and running perfectly round. The first test drilling was a delight and nothing compared to conventional hardware store goods. These drills cut effortlessly into any material and tear on leaving no huge amounts of material with them. There is also a metal box, which protects the drill well and the drill bits are held by a plastic insert from beating against the metal case. I am completely satisfied and have for "coarser" bets now the Metabo-set, in which I wear not so hurts.
