Convenient, slightly larger than a screwdriver. Drilled brick, concrete. Drills two times slower than network, but confidently. I drill with a six, under the dowels. For a dozen holes, that's it. If you need to drill for a long time, then it will not stand. It is advisable to use a 4 amp battery. Spends it pretty quickly, you need a second one. I assemble furniture, it suits me perfectly, I also have two 12 volt screwdrivers, they have 2 ampere batteries. All batteries are interchangeable.