IRWIN 3041020 Speedbor MAX 1-3/8 in. x 6 in. Standard Length Tri-Plute Auger Speed Bit is the Fastest Speedbor spade bit ever and features Tri-Flute design for faster chip ejection. Cutting spurs have 3 cutting edges for added durability. Full screw tip allows the bit to self-feed. Grooved hex shank prevents slipping in drill chuck or bit extension. It fits all standard 1/4" quick change chucks.
- 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" quick-change shank reduces slipping in standard chucks and is compatible with all 1/4" quick-change chucks, including impact drills