12" Cobalt Aircraft Extension Drill Bit

· 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
· 12" overall length for drilling where extra length for reach is required