Greenlee 06-03-54M D'VersiBIT Type M Masonry Bit, 3/8 by 54-Inch For drilling in masonry walls and through plaster Recommended for use with Abrasion Shield to reduce friction and abrasion as the shaft turns against masonry 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