#39 x 12" Cobalt Aircraft Extension Drill Bit

Product Description
Cobalt drill bits are are effective in drilling tough, high tensile strength materials such as cast iron, inconel, stainless steel and titanium. They display high red hardness, permitting speeds up to 30% greater than with conventional M2 high speed steel. They have a 135° split point tip for fast penetration and accurate drilling. Compared to a conventional 118 degree tip, these drills wont go "walking" on you. Ideal for drilling where extra length for reach is required. Round shank for use in a wide range of tool holding systems

Brand Drill America
Part Number GLBCOX1239
Size #39
Material Cobalt
Finish Gold
Flute Length 1-3/8"
Length 12"
Point Split Point
Point Angle 135
Shank Type Round
Number of Flutes 2