Speedbor MAX speed bit 6 inch standard length bit. Three cutting spurs for faster, cleaner holes, 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. 1/4 inch quick-change shank reduces slipping in standard chucks and is compatible with all 1/4 inch quick-change chucks, including impact drills.