DEWALT DW1629 1-Inch 1/2-Inch Reduced Shank Twist Drill Bit

The DEWALT DW1629 is a heavy-duty 1-inch twist drill bit designed for drilling large-diameter holes in metal and other tough materials. Its reduced 1/2-inch shank allows it to be used with standard 1/2-inch drill chucks, while the durable construction is built to withstand demanding drilling applications. Ideal for workshop, maintenance, fabrication and general heavy-duty jobs where a large, clean hole is required.
Black oxide coating for greater wear resistance split point drills on contact and prevents walking. Parabolic groove design improves chip ejection in metal and wood drilling applications. The helix is 31 degrees, which minimises the overaggressiveness of a real parabolic groove.