The 9/16-1" x 16th Drill Set S&D with Counter Sink from Field Tool Supply is a versatile toolset designed for precision drilling. This set includes multiple drill bits, each crafted from high-speed steel for enhanced durability and performance. The 9/16" diameter is ideal for a variety of applications, including metalworking and woodworking. The counter sink feature allows for smooth finishing of holes, making it perfect for creating flush surfaces. This set is essential for professionals looking for reliability and efficiency in their drilling projects.