Irwin 1866037 Wood Speedbor Max Drill Bit, 1" x 4" Ridge Length - 7-1/2"

Length - 7-1/2"

Powder coated to withstand the elements

Includes: (2) OPP Tape Rolls

steel pins for adjustment holes & a turning handle

Irwin 1866037 Wood Speedbor Max Drill Bit, 1" x 4" Ridge Length - 7-1/2"Highlights: 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