I've owned this drill for four years. The motor works great, there is a lot of power, the drill chuck, which is crucial for an impact drill, does not work. ROM manufacturer. I will no longer buy drills with drill chucks from the "Rum" brand. I also have the model this drill replaced, great drill, I see they have released a replacement for this model, also model 5387, looks like it has a good chuck. In 2005, Milwaukee was taken over by the Chinese company ITT. They don't want you to know. If you often drill in concrete, buy a drill with an SDS chuck. Not "one practice does everything”. The SDS chuck allows the drill to hammer while the chuck remains stationary. It is much more efficient not to vibrate the drill chuck and drill while drilling.