Norseman CN-Tech Cryogenic Frozen Drill Bits: Priced Individually

Made in the USA! 

135° Split Point Type 190-CN.

Cryogenic 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. 

Nitride process case hardening resulting in superior tool life and exceptional corrosion resistance.

WARNING: Cancer & Reproductive harm www.P65Warnings.ca.gov