If you want to drill in metal or sheet material, don't forget to attach a drill bit for metal to your drill. Drill bits for metal are very sharp, so they can drill through the hard material. In addition, you could pierce through with a blunt head and you don't want to damage the metal. The most common drill bit for metal is often called HSS drill, after High Speed Steel. You'll often find drill bit for metal in a set with drill bits for wood and stone, because these can all be used with your screw or impact drill.