#7 x 12" Cobalt Aircraft Extension Drill Bit BoltsandNuts.com Size 1-3/4"

Size 1-3/4"

Part Number DWRRTPH2/0

Part Number DWRR20

Grading of cuts according to coarseness is the same as Square File

#7 x 12" Cobalt Aircraft Extension Drill Bit BoltsandNuts.com Size 1-3/4"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