Power through your drilling jobs with the 5 pc. High-Speed Steel Countersink Drill Bit Set. The precision-ground 82° tip allows you to drill most machinable metal, wood, and plastic. It’s built for strength and durability with a M-2 high-speed steel construction and a corrosion-resistant black oxide coating. The unique 5-flute design delivers a smooth, accurate performance. The 1/4 in. round shank is designed for all handheld and stationary drills.