The 31/64 COBALT JOBBER DRILL from Field Tool Supply is a premium drill bit made from cobalt steel, designed for high-performance drilling in tough materials. This jobber drill features a size of 31/64 inches, making it ideal for a variety of applications, including metalworking and fabrication. The cobalt construction enhances its heat resistance and durability, allowing for extended use without wear. This drill bit is perfect for professionals seeking reliable tools for precision drilling, ensuring clean and accurate holes in hard metals.