Split tip drill prevents damage by gradually guiding cutter to material; no walking. A great choice for you. Carbide teeth for fast cutting of neat, round holes. You can use the metal hole saw cutter drill bit with confidence. Designed specifically for sheet metal cutting, even stainless steel. Bring you a new and different using feeling. Over drill flange built in to prevent penetration beyond the sheet metal. The quality of the metal hole saw cutter drill bit is guaranteed. Cuts quick, precise holes in stainless steel, mild steel, iron, copper and brass. Size: 18.5mm, Manufacturer: Fafeicy