#37 x 12" Cobalt Aircraft Extension Drill Bit Quantity:1 along with an impact universal

along with an impact universal joint and adapter

Part Number: M12X70DPOSAPL

This set includes a durable carrying case

Part Number: 75C425WASS/316

Depth: 12-3/4"

#37 x 12" Cobalt Aircraft Extension Drill Bit Quantity:1 along with an impact universalProduct 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