DEWALT DW1629 1-Inch 1/2-Inch Reduced Shank Twist Drill Bit,Black Product Description DEWALT DW1629 1IN HSS 1/2IN DRILL BIT From the Manufacturer DeWalt DW1629 1-Inch 1/2-Inch Reduced Shank Twist Drill Bit Features 1IN HSS 1/2IN DRILL BIT 1IN HSS 1/2IN DRILL BIT 1IN HSS 1/2IN DRILL BIT 1IN HSS 1/2IN DRILL BIT 1IN HSS 1/2IN DRILL BIT 135 degree split point drills on contact and prevents walking Parabolic flute design improves chip ejection in metal and wood drilling applications Black oxide coated for greater wear resistance Helix is 31 degrees which minimizes the over aggressiveness of a true parabolic flute USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.