The Hertel Screw Machine Length Drill Bit (Letter X, 0.3970" diameter) is a precision-engineered tool designed for professional drilling applications. Featuring a 135-degree split point that reduces thrust and prevents walking, this cobalt drill bit offers superior heat and wear resistance for drilling through tough materials. With a straw finish, right-hand cut, and regular spiral flute design, it delivers efficient chip evacuation and smooth operation. The bit measures 3-5/16" in overall length with a 1-15/16" flute length and comes with a straight shank for secure mounting. This durable Hertel drill bit is ideal for machinists and professionals who demand reliable performance and precision in their drilling operations.