Irwin Speedbor 1866066 1/2 x 16 Max Speed Tri-Flute Wood Drilling 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
- 3/8 hex shank reduces slipping in standard chucks
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Aeronca x 159