Greenlee 1258D D&#39;VersiBIT Type HS Wood Bit, 1/2 by 28-Inch,Greenlee,1258D" /> Designed for aggressive cutting in all types of wood Made from high-speed steel to ensure long life Replaces Bellhanger bits on 12-Inch, 18-Inch and 24-Inch lengths These flexible steel drill bits are the right tools for installing wire or cable inside existing walls Bends to meet your needs