Irwin Speedbor 3041020 Auger Boring Bit, 1-3/8 in Dia, 6 in OAL, Tapered Flute, 3-Flute, 3/8 in Dia Shank, Hex Shank

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The Irwin Speedbor® MAX SPEED™ wood drilling bit is the fastest SPEEDBOR® ever. The speed tip features a full screw point that allows bit to self-feed, as well as three cutting spu rs for faster, cleaner holes, less breakout and extended drilling life. The tapered tri-flute design allows for faster chip ejection and less binding. Its grooved hex shank prevents slipping and fits all standard 1/4 in quick-change chucks, including impact drills. 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 in quick-change shank reduces slipping in standard chucks and is compatible with all 3/8 in quick-change chucks, including impact drills Show more