Want More Norseman Bits and Sets? All Our Tools MADE IN USA! America’s Finest High Speed Steel Cutting Tools. Cryogenic Treated creating a uniform grain structure resulting in the sharpest cutting edge on the market. Superior to Cobalt bits. Recommended for stainless steel, spring steel, and other hard grade metal drilling applications. 29 Fractional Sizes 1/16″ to 1/2″ (by 1/64ths) Each bit Stamped (1/8in and up). 1/16″, 5/64″, 3/32″, 7/64″, 1/8″, 9/64″, 5/32″, 11/64″, 3/16″, 13/64″, 7/32″, 15/64″, 1/4″, 17/64″, 9/32″, 19/64″, 5/16″, 21/64″, 11/32″, 23/64″, 3/8″, 25/64″, 13/32″, 27/64″, 7/16″, 29/64″, 15/32″, 31/64″, 1/2. M7 Steel, Jobber Lengths. Norseman’s CN-TECH Line. Cryogenic treatment creates a more uniform “grain” structure by transforming retained austenite into martensite resulting in the sharpest cutting edge on the market. Nitride hardening process diffuses nitrogen into the surface to create a case hardening resulting in superior tool life and exceptional corrosion resistance. 135 Degree Split Point – Prevents Bit Walking. Tri-Flat Shank Prevents Slipping While in Chuck (3/16 and up). Bits Laser Engraved “USA” & Size, 1/8 & up. 2 Tier Steel Index Case.