Drillco 1200C132 Cobalt Bronze Oxide Aircraft Ext Drill Bits 1/2" x 12"

Drillco 1200C132 Cobalt Bronze Oxide Aircraft Ext Drill Bits 1/2" x 12"

12" Aircraft Extension Drills for drilling holes in hard to reach places. Manufactured to NAS 907 Type J specifications, 135 degree split point, surface treated with jobber flute lengths. Cobalt Steel for higher performance in tougher materials.

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
• 12" overall length for extra reach in hard to reach places
• Bronze surface treatment for high lubricity
• Round shank

Applications

• Drilling holes in high strength materials
• Heavy-duty drilling
• Drilling in hard to reach places