The 4.20MM BLACK JOBBER DRILL RH from Field Tool Supply is a high-quality right-hand drill bit designed for precision drilling. With a diameter of 4.20MM, this jobber drill is made from high-speed steel, ensuring durability and performance in various materials. The black oxide finish provides additional protection against wear and corrosion, making it suitable for both professional and industrial applications. This drill bit is ideal for use in metalworking, woodworking, and other drilling tasks, providing reliable results in every project.