The 55/64 X 18 SS HS XL Drill from Field Tool Supply is a high-speed steel drill bit designed for optimal performance in stainless steel and other tough materials. With a diameter of 55/64 inches and a length of 18 inches, this drill bit is ideal for deep hole drilling applications. Its high-speed steel construction ensures durability and heat resistance, making it suitable for high-speed machining. This drill is perfect for industrial applications, providing precision and efficiency for professionals in metalworking and fabrication.