ARTU 01180 Jobber Bit Drill Bit, Parabolic Flute, 11-3/4 in L Flute, Reduced Shank, 4-1/4 in L Shank

For rotary or percussion drilling. Chrome vanadium steel shank with cobalt and tungsten carbide tip that withstands temperatures up to 1900 degrees Fahrenheit. Special negative back grinding enables tip to bore through applications such as masonry, ceramic tile, concrete, brick, fiberglass, plexiglass, cast metals, hardened steel, granite, marble, woods, and plastic with a filing action rather than a cutting action. No center punch required; eliminates walking and can be re-sharpened. NOTE: Not recommended for use on mild steel. This includes aluminum, angle iron, copper, galvanized pipe, brass and stainless steel.Chrome vanadium steel shank for enormous strength and flexibility

Chrome vanadium steel shank for enormous strength and flexibility

Outlasts regular carbide-tipped bits

Requires no center punch and eliminates walking

Resharpens on a high-quality silicon carbide grinding wheel

Uses standard coolants such as turpentine, light oil, water