IRWIN SPEEDBOR Max 1/2-in Woodboring Drill Bit3 Cutting spurs for faster, cleaner holes with less breakout and extended drilling life Full screw point tip allows bit to self feed for ease of drilling Tapered tri flute design for faster chip ejection and less binding Hole in flute for easy wire pulling through walls, ceilings, and floors Features Series Name Max Sub Brand SPEEDBOR Bit Type Installer bit Bit Length 16 in Shank Size 3 8 in Shank Type Hex Material High speed steel Case Type N A (no