The CTD Cryo-Tech 190-CN Drill Bit Set (29-Piece, Jobber Length) is a heavy-duty drill set built for demanding maintenance and repair work—especially when drilling tougher alloys like 300 & 400 series stainless steel. Each bit features a nitrided surface treatment for high surface hardness and strong corrosion/heat resistance, paired with cryogenic treatment to increase toughness and reduce brittleness for longer service life in real-world shop and field conditions.
Country of Origin: Varies by production batch
Key Features / Specifications
Brand:CTD
Model / Type:190-CN
Set Size:29-piece
Drill Style:Jobber length
Treatment / Finish:Cryo-treated + nitrided
Surface Hardness (as stated): Nitrided coating creates surface hardness up to 70 Rockwell C
Performance Focus: Designed to replace cobalt drills when drilling 300 & 400 series stainless steel
Durability Benefits (as stated):
Cryogenic treatment increases toughness and reduces brittleness
Improves resistance to wear and tear
Provides stress relief for a more uniform composition