Complete countersink applications with this DeWalt High-Speed Steel Countersink Drill Bits. Engineered for use in many common materials, these durable, corrosion-resistant black and gold bits feature an 82 tip making them ideal when working with metal, wood, and plastic. A 5-flute design allows for smooth drilling while helping to provide long bit life and minimize friction. Available as a 5-piece set or in the following individual sizes - 1/4 in., 3/8 in., 1/2 in., 5/8 in., and 3/4 in.