31/64" x 12" Cobalt Aircraft Extension Drill Bit Quantity:1 Stamped Markings – A size

Stamped Markings – A size marking is permanently stamped onto both sides of each combination wrench for quick identification

Part Number GLBCOX65/16

They have a taper shank

Depth: 12-7/16"

Part Number DWDTSMM35

31/64" x 12" Cobalt Aircraft Extension Drill Bit Quantity:1 Stamped Markings – A sizeProduct 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