<ul><li>Quick Connect Multi-Purpose Drill Bit For Rotary or Percussion Drilling</li><li>For use on Glass, Granite, Plexiglass, Marble, Ceramic Tile, Fiberglass, Cast Metal, Brick, Hardened Steel, Masonry, Soft Wood, Concrete, Hard Wood.</li><li>Chrome vanadium steel shank for enormous strength and flexibility.</li><li>Flat bottom parabolic flute for faster waste removal. Special negative back grinding enables the tip to bore through materials with a filing action, not cutting.</li><li>Outlasts regular carbide tipped bits. No center punch needed, eliminates walking. Resharpen on a high quality silicon carbide grinding wheel. Conforms to ANSI standards. Coolants: turpentine, light oil, water.</li></ul><br><br>Artu - 1/8In Quick Connect Multi-Purpose Drill Bit