Ivy Classic 10248 3/4 X 6-Inch Premium Carbide Masonry Drill Bit,, 1/Card IVY Classic Industries is dedicated to producing a comprehensive, quality line of power tool accessories and hand tools. IVY Classic Swift Cut Premium Carbide Masonry Drill Bits are designed for rotary and percussion hammer drilling through block, brick, stone, concrete and marble. These bits have been induction hardened, ensuring their straightness and strength. Specially engineered wide flutes are ideal for fast dust removal. The bits have a black oxide finish with a precision ground tungsten carbide reinforced head. IVY Classic Swift Cut Premium Carbide Masonry Drill Bits are available from 4 to 18-inch long in a variety of diameters. Round shank designed for rotary and percussion hammer drilling through block, brick, stone, concrete and marble, Swift Cut (Registered Trademark) Tungsten Carbide reinforced head - precision ground Induction-hardened body ensures straightness and strength, black-oxide finish Engineered with wide flutes for fast dust removal Diameter: 3/4-inch, Overall Length: 6-inch, Shank: 1/2-inch Reduced Shank, Flute Length: 3-3/8-Inch