80840 Type 190-ALN HSS 135Â degree Split Point NAS 907B TiAIN Coated Jobber Length Drill Bit (6 pack) 3.375" OD Boston Gear’s internal gears are

Boston Gear’s internal gears are spur gears turned "inside out

a spring loaded pressure plate (magnet armature) presses against the rotating discs

and cast iron and are manufactured in a variety of styles

Thermoplastic Pigtails are composed of reinforced PVC

Automotive (Tru-Flate) Interchange

80840 Type 190-ALN HSS 135Â degree Split Point NAS 907B TiAIN Coated Jobber Length Drill Bit (6 pack) 3.375" OD Boston Gear’s internal gears areHeavy duty construction for drilling in tougher materials Manufactured from premium high speed steel 135 split point is self centering for reducing thrust and easier penetration Provides exceptional oxidation resistance and extreme hardness TiCN is harder and has a lower coefficient of friction then TiN coating. Recommended where moderate temperatures are generated. Manufactured to NAS 907B aerospace specification Titanium aluminum nitride (TiAIN)