#23 x 12" Cobalt Aircraft Extension Drill Bit BoltsandNuts.com Part Number: 75F550HCS8Y

Part Number: 75F550HCS8Y

Part Number: EZ-303-5

and a detent pin hole on one side allows you to decide whether to engage the pin

and a Reducer (3/4 to 1/2 inch drive)

vibration polishing

#23 x 12" Cobalt Aircraft Extension Drill Bit BoltsandNuts.com Part Number: 75F550HCS8YProduct 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