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Includes one each 1/8 inch, 3/16 inch, 1/4 inch, 5/16 inch and 3/8 inch Includes one each 1/8 inch, 3/16 inch, 1/4 inch, 5/16 inch and 3/8 inch for rotary or percussion hammer drilling. Chrome vanadium steel shank together with tungsten carbide and cobalt tip that is resharpenable and able to withstand drilling temperatures up to 2,000 degree Fahrenheit. No center punch needed. Use with cordless drills, corded drills and drill presses in applications on such as hard surfaces as masonry, ceramic tile, concrete, brick, glass, cast metals, hardened steel, granite and marble or soft surfaces such as woods, fiberglass, Plexiglas and plastics. Not recommended for use on mild steel, aluminum, angle iron, copper, galvanized pipe, brass and stainless steel.
- Set includes 1 each: 1/8 in., 3/16 in., 1/4 in., 5/16 in., 3/8 in.
- For use on glass, plexiglass, ceramic tile, cast metal, hardened steel, soft wood, hard wood, granite, marble, fiberglass, brick, masonry, concrete and PVC
- For rotary or percussion drilling
- Special negative back grinding enables the tip to bore through materials with a filing action, not cutting
- Cobalt and tungsten carbide
- Chrome vanadium steel shank has enormous strength and flexibility
- Flat bottom parabolic flute for faster waster removal
- Works ideally for cordless drills, corded drills and drill presses
- Requires no center punch - eliminates walking
- Resharpens on a high quality silicon carbide grinding wheel
