The 0.42MM BLACK JOBBER DRILL RH from Field Tool Supply is a high-precision drill bit designed for drilling small holes in various materials. With a diameter of 0.42mm, this right-hand drill bit is perfect for intricate tasks requiring accuracy. Made from high-speed steel with a black oxide finish, it offers enhanced durability and reduced friction during use. This jobber drill is ideal for applications in electronics, jewelry making, and other precision engineering tasks. A must-have for any toolkit, it ensures clean and accurate drilling.