80613 Type 150-ALN Jobber Length TiAIN NAS 907J 135Â degree Split Point Drill Bit (6 pack) 1" to 1-1/2" " In other words

" In other words

Note: Because the efficiency of a worm gear drive depends on the lead angle and number of starts on the worm

Pressure Angle: 14-1/2 Degree

and horsepower ratings from 0

80613 Type 150-ALN Jobber Length TiAIN NAS 907J 135Â degree Split Point Drill Bit (6 pack) 1" to 1-1/2" " In other wordsManufactured from M42 HSS containing 8% cobalt which increases high red hardness. Cobalt drills require rigidly held positive feed drilling equipment. Titanium Aluminum Nitride can be used in machining stainless steel, nickel based and titanium alloys, not recommended for aluminum. Manufactured to NAS 907J specifications. Titanium aluminum nitride designed for use where extreme temperatures are found, allows for increased machining speeds up to 200%.