Norseman by Viking Drill and Tool 26193 Vortex-Point 13/16 " 130-VT. Unique tip geometry reduces heat generation & cutting tool wear increasing tool life. Easily enlarges existing holes without damaging the point. Stay sharp up to 4X longer compared to conventional and other specialty tip design. Recommended for Cast iron, Brass, Sheet metal, Plastic, Mild steel, Copper, Hardened steel. 6 in. (26153)