Drillco 500A121 Cobalt Bronze Oxide Jobber Drill Bits 21/64"

Drillco 500A121 Cobalt Bronze Oxide Jobber Drill Bits 21/64"

The high red hardness of Drillco's M42 cobalt drills permit speeds 30% greater than HSS drills. Heavy duty construction made to Type J aircraft specs. For drilling holes in hard, tough materials such as stainless steel, titanium, and high strength alloys.

Product Features

• Made with premium grade cobalt HSS to drill harder materials
• Cobalt drills can drill approximately 30% faster than HSS drills
• Self centering 135° split-point for reduced thrust requirements and minimized walking
• Bronze surface treatment for high lubricity
• Nas Type J specifications
• Jobber length for most use cases
• Made in USA

Applications

• Drilling holes in high strength materials
• Heavy-duty drilling
• Drilling in stainless steel