For rotary or percussion drilling. Chrome vanadium steel shank, diamond ground tip, special negative back grinding enables tip to bore through brick, concrete, masonry, ceramic tile, fiberglass, plexiglass, glass, cast metals, hardened steel, granite, marble, woods and plastic with a filing action. Cobalt and Tungsten carbide tip for max hardness and resistance to heat and wear. No center punch required, eliminates walking. High tech bonding allows bit to withstand drilling temperatures up to 2000 deg F. Easy to resharpen. Includes one each: 1/8 in, 3/16 in, 1/4 in, 5/16 in, 3/8 in, 7/16 in, 1/2 in and plastic case. NOTE: Not recommended for use on mild steel. This includes aluminum, angle iron, copper, galvanized pipe, brass and stainless steel.
- Works ideally for cordless drills, corded drills and drill presses
- Works ideally for cordless drills, corded drills and drill presses
- Outlasts regular carbide tipped bits
- Requires no center punch - eliminates walking
- Resharpens on a high-quality silicon carbide grinding wheel
- Uses standard coolants - turpentine, light oil, water
- 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
- The blend and high tech bonding of cobalt and tungsten carbide allows bit to withstand temperatures up to 2000 deg F
