Irwin 1866033 Wood Speedbor Max Drill Bit, 1/2" x 4" Steel Boxes & Covers Finish: Clear satin

Finish: Clear satin

Designed for bi-parting wood sliding doors at least 1-1/2" thick

Insulated stainless steel

universal motor Pump Speed 2

Fits over 1-1/2" SCH 40 DWV pipe or inside 2" SCH 40 DWV pipe

Irwin 1866033 Wood Speedbor Max Drill Bit, 1/2" x 4" Steel Boxes & Covers Finish: Clear satinHighlights: Size: 1 2" 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