Irwin Speedbor 1866040 1/2" X 12" Tri-Flute Drill Bit
3/8" Shank
Wire pulling
Max Speed
Speed Tip
Features:
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
Hole in flute for easy wire pulling through walls, ceilings and floors
Aeronca X 4 weiser c10