48022 Type 190-CN HSS CN-TECH™ Jobber Length 135Â degree Split Point Drill Bit (12 pack) X12 When used with worm gears

When used with worm gears

Body Material Aluminum (Anodized)

the basic design of this unit has remain unchanged for many years

PRE14 1/4" 3/8"

48022 Type 190-CN HSS CN-TECH™ Jobber Length 135Â degree Split Point Drill Bit (12 pack) X12 When used with worm gearsCryogenic treatment creates a more uniform grain structure by transforming retained austenite into martensite. Modifies the carbon micro structure through precipitation of carbides increasing resistance to wear. Nitride process diffuses nitrogen into the surface to create a case hardening resulting in superior tool life and exceptional corrosion resistance. Click Here for product catalog Proudly Manufactured in the U. S. A