1-3/8" x 6" Tapered Tri-flute, 3/8" Hex Shank Speedbor Wood Bit

The IRWIN Speedbor Tri flute drill bit is the fastest SPEEDBOR spade bit ever. It has a Tri-Flute design for faster chip ejection. Full screw tip allows bit to self feed.

Features:

• Cutting spurs have 3 cutting edges for added durability
• Grooved hex shank prevents slipping in drill chuck or bit extensio
• For use with corded and portable cordless drills
• Tri-Flute design for faster chip ejection