Drill America 3/16' x 6' Cobalt Aircraft Extension Drill Bit, GLBCO Series
- Effective in drilling tough, high tensile strength materials like stainless steel, inconel and titanium.
- 135° split point tip prevents drill from walking.
- Round shanks allow use with a wide variety of tool holding systems.
- Gold oxide is a thinner oxide surface treatment than black oxide typically used to identify cobalt steel tools.
- performance is similar to uncoated tools.
- 6" overall length for drilling where extra length for reach is required.