With a screw drill, you can perform most jobs in and around the house. You can drill in wood, plaster, and metal. That way, you can put together furniture or hand a photo frame on the wall. The more powerful the screw drill or drill is, the larger the holes you drill are. Screw drills usually run on a battery. That's useful, because it allows you to work in places without a socket. Most screw drills and drills have a light as well. That way, you always see what you're doing and you can easily work in dark rooms.