This is a brilliant tool for all sorts of little jobs, however there are power limitations. I have been "de-grouting" my tiled kitchen floor (about 10 or 11 sq. mtr) and three-quarters of the way through the job the battery died. For big jobs I would probably recommend the mains-operated tools. Also, when the speed limitations of the different bits are quoted on the back of the packets, be sure to observe them! I made the mistake of going at full tilt and these bits are not cheap! For less demending jobs than this, though, I would recommend it.