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.Features Includes a black oxide finish for added corrosion resistance 1/4" round shank fits all handheld and stationary drills Precision ground 82° tip for countersinking most machinable metals, wood or plastic Made from industrial grade high speed steel for increased durability Five flute design reduces vibration for smoother drilling and extended life Length: 5.2 in Width: 4.6 in Height: 1 in Weight: 0.313 lbs Material: High Speed Steel Finish: Black Oxide Tip Angle: 82 Flute Count: 5 Shank Diameter: 1/4 in Country of Origin: China