The Comb Drill & CtsK HS 4-1/2X6 by KEO, available at Field Tool Supply, is a versatile tool designed for both drilling and countersinking tasks. With a diameter of 4-1/2 inches and a length of 6 inches, this high-speed steel tool is perfect for a variety of materials. Its dual functionality allows for efficient operation, reducing the need for multiple tools. Constructed from high-speed steel, it offers durability and performance in demanding environments, making it an essential tool for professionals in metalworking and fabrication.