I bought this for my Milwaukee M12 system primarily because it has the 1/2 inch chuck. It is lightweight and has some pretty decent power for a 12 volt drill. A bonus feature was the hammer drill feature on it. I wouldn't use it to drill large holes in concrete as this is not it's designed purpose but drilling small holes for things like screw anchors in brick and concrete is not a problem. It will definitely drill and drive Tapcons. For larger holes in concrete I would suggest using a full size SDS type drill. One other feature is the electronic clutch that definitely takes some getting used to as the tool ramps up in speed as you pull the trigger. It does work but I like having full power right off the bat or the ability to feel the trigger as power is being applied to the motor. Not a deal breaker by any means and it takes some getting used to but I do prefer the mechanical clutch that you find on most other drills. Overall it is a good drill for light duty use around the house which is what I bought it for and to be able to handle drill shanks up to 1/2 inch. Great deal for the price I paid, I am assuming that these are either factory seconds or blemish items as they are packaged in a plain box without documentation but I found no obvious issues with the one that I received and everything worked as I had expected after researching user descriptions and going to the Milwaukee website prior to buying it. Definitely a better deal than box store price for a bare tool.