Irwin 1866037 Wood Speedbor Max Drill Bit, 1" x 4" Ridge Commercial cleaner resistant

Commercial cleaner resistant

Jaws are selected straight grain seasoned hard maple

Length - 7-1/2"

Meets ADA standards for accessible design

Irwin 1866037 Wood Speedbor Max Drill Bit, 1" x 4" Ridge Commercial cleaner resistantHighlights: Size: 1" x 4" 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. Ideal for holes up to 2" deep Six times faster than standard spade