Description
Specs
- Diameter: #43
- Length: 12" (extension drill bit)
- Material: Cobalt alloy (HSS-Cobalt)
- Quantity: 1 PC
Features
- Extended 12\" reach for deep or through-thickness drilling in metalwork, aerospace maintenance, and fabrication tasks.
- Cobalt alloy provides greater hardness and wear resistance, maintaining cutting performance at higher temperatures compared to standard HSS.
- Designed as an aircraft extension bit to address long-hole drilling where standard bits fall short.
- Small-diameter #43 enables precise pilot holes or clearance holes in metal assemblies.
- Optimized for consistent performance with metal materials common in aerospace and industrial settings.
- Use scenarios include deep-hole access in thick components and long bore requirements where traditional bits can’t reach.
Physical
- Overall length: 12 inches
- Diameter: #43
- Material: Cobalt alloy (HSS-Cobalt)
Can We Help?
If you’re not sure that this product is right for you, give us a call!
800-222-0324

![[1 PC] #43 x 12" Cobalt Aircraft Extension Drill Bit](http://mutualscrew.com/cdn/shop/files/GLBCOX121-16_dfdfb52b-0d7b-4fd8-8470-914c3d51e5e8.jpg?v=1771708185&width=699)