Wood drilling bit. The Speed Tip features a full screw-point that allows bit to self-feed, as well as three (3) cutting spurs for faster, cleaner holes, less breakout, and extended drilling life. Tapered tri-flute design allows for faster chip ejection and less binding. Grooved hex shank prevents slipping and fits all standard 1/4" quick-change chucks, including impact drills. Size 16” x 1/2”. Overall length 16”.