IEY1667 Features: * Designed with a hole in the tip for running wires through walls, ceilings, and floors * Use to install computer, telephone, television, stereo, and security system wires * Wide flute design provides fast, clean boring action in wood and drywall * 3/8"" shank diameter * 3-3/4"" flute length * 18"" overall length * Carded Dimensions: * 1/2"" diameter