Heavy-duty 5-piece multi-purpose drill bit set for professional and DIY use. Cobalt and tungsten carbide tips resist heat (up to 2000 F) and can be resharpened to extend life. Chrome vanadium steel shanks deliver strength and flexibility, and negative back grinding creates a filing action to bore through tough materials without walking. Flat-bottom parabolic flutes clear debris quickly for cleaner holes. Compatible with cordless and corded drills and drill presses; no center punch needed. Ideal for glass, granite, plexiglass, marble, ceramic tile, fiberglass, cast metal, brick, masonry, concrete, PVC, and both soft and hard woods. Includes one each: 1/8", 3/16", 1/4", 5/16", 3/8" with 1/8 In. shank.
Multi-purpose drill bits for rotary or percussion drilling
Drills glass, granite, plexiglass, marble, ceramic tile, fiberglass, cast metal, brick, hardened steel, masonry, concrete, and soft or hard wood
Chrome vanadium steel shank delivers strength and flexibility for demanding jobss
Ideal for use with cordless drills, corded drills, and drill presses
Flat-bottom parabolic flute removes waste faster for cleaner, quicker drilling
Special negative back grinding produces a filing action to bore through hard materials
Cobalt and tungsten carbide tips outlast regular carbide-tipped bits for extended service life
No center punch needed; design eliminates walking for accurate starts
Resharpen on a high-quality silicon carbide grinding wheel to extend tool life
