I have not used the drills yet so cannot comment on the quality of the drill. I received it yesterday and when I took it out of the box I noticed the tape on the case was torn as if it had been opened. One part was missing and some others looked used. I'm pretty sure I received a set that was returned. I haven't decided yet whether to return it or just use it as is. I really don't want to mess around with the return and wait for another set.