The 39/64 Cobalt Parabolic Jobber drill bit from Field Tool Supply is engineered for high-performance drilling in tough materials. Made from premium cobalt steel, this bit provides exceptional durability and heat resistance, making it perfect for heavy-duty applications. Its parabolic flute design enhances chip removal and reduces friction, ensuring efficient drilling. Measuring 0.609 inches in diameter, it is suitable for metalworking, woodworking, and industrial tasks. This drill bit meets ANSI standards, ensuring reliability and performance in demanding environments.