Chicago Latrobe 45638 A-Z Black Oxide Finish High Speed Steel 135-Degree Split Point Twist Drill Bit Set, 26-Piece Set

Chicago Latrobe 45638

•NAS 907 Type B geometry aerospace specification.
•Black oxide surface treatment increases wear resistance and adds lubricity to improve chip flow.
•Round shanks allow use with a wide variety of toolholding systems
•Split point is self centering and excellent for hand help and machince applications.
•Set includes #1 - #60 sizes drill bits

Chicago Latrobe 45638

Chicago Latrobe HSS heavy duty jobber length drill bit set. Manufactured to NAS 907 Type B geometry aerospace specifications. Heavy-duty consruction for drilling in tougher materials. Manufactured from premium high-speed steel. 135 degree split point is self-centering for reduced thrust and easier penetration. Excellent choice for cutting stainless steel, tool steel, alloy steel, and cast iron. Black oxide surface treatment adds lubricity and wear resistance and adds lubricity to imrove chip flow.