The #58 Cobalt Parabolic Jobber from Field Tool Supply is designed for precision drilling in tough materials. This jobber drill bit features a cobalt steel construction, enhancing durability and heat resistance. With a parabolic flute design, it efficiently removes chips and provides better chip flow, making it ideal for high-speed applications. The bit measures 0.58 inches in diameter, ensuring compatibility with various drilling tasks. It is suitable for use in metalworking, automotive, and manufacturing industries, meeting ANSI standards for quality and performance.