Artu 1050 3/8In x 5-1/4In Multi-Purpose Drill Bit

3/8" x 5-3/16", Multi-Purpose Drill Bit, Rotary Or Percussion Drilling, Tungsten Carbide & Cobalt Tip, Maximum Hardness & Resistance To Wear, Drills Through Concrete, Masonry, Ceramic Tile, Brick, Fiberglass, Plexiglass, Glass, Cast Iron.   Multi-Purpose Drill Bit For Rotary or Percussion Drilling For use on Glass, Granite, Plexiglass, Marble, Ceramic Tile, Fiberglass, Cast Metal, Brick, Hardened Steel, Masonry, Soft Wood, Concrete, Hard Wood. Chrome vanadium steel shank for enormous strength and flexibility. Ideal for cordless drills, corded drills and drill presses. 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. 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. Shipping Note: Shipping to Alaska, Hawaii, PO Boxes, and APO addresses is not available for this item Warranty: 90 Day Woot Limited Warranty