IRWIN 1890944 Flexible Installer Drill Bit with High-Speed Steel Tip, 1/4-Inch Shank 24-Inch Length by Irwin Tools

商品説明

Unique combination of 135 Degree self-centering split point stepped to 118 Degree hole enlarging body for fast, easy starts and smooth drilling;Hole in flute for easy wire pulling through walls, ceilings and floors;3-flatted shank prevents slipping in drill chuck and includes hole for wire pulling;Tapered flute for faster chip ejection, less binding and smoother drilling Does not apply to 1/4 diameter SKUs;Premium high speed steel construction for extended drilling life in metal, wood and plastic