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Now In: ToolsDrill Bits → Ingersoll Rand 20pc. Cobalt SAE Jobber Length Drill Bit Set - DBKCB-20E
Ingersoll Rand 20pc. Cobalt SAE Jobber Length Drill Bit Set - DBKCB-20E


Ingersoll Rand 20pc. Cobalt SAE Jobber Length Drill Bit Set - DBKCB-20E



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Ingersoll Rand 20pc. Cobalt SAE Jobber Length Drill Bit Set - DBKCB-20E

Ingersoll Rand
SKU:    IR-DBKCB-20E
Price: $56.06 
Quantity:   
  • Integrated Cobalt for maximum protection and durability
  • Fully ground for superior quality
  • Designed for heavy duty drilling
  • Includes case
  • Works specifically with IR cordless drill / drivers
These bits withstand very high temperature drilling applications for extended periods of time. They're designed for heavy-duty drilling in hardened stainless steels, cast iron, and titanium. Includes sizes: (2) 1/16", (2) 5/64", (2) 3/32", (2) 7/64", (2) 1/8", 9/64", 5/32", 11/64", 3/16", 7/32", 1/4", 5/16", 3/8", 7/16", 1/2". Includes case. Cobalt bits are not coated, they are cobalt steel through and through. At the end of manufacturing, a cobalt bit is baked in an oven to turn the surface color of the steel a dull gold color. This is done primarily for easy identification by color. If the gold wears off or is ground off in sharpening on a cobalt bit, it is still solid cobalt steel. Our cobalt drill bits are made of M42 cobalt steel which has 8 percent cobalt content. The Rockwell is approximately 65.5 to 67 Rockwell C. Titanium drill bits have a hardness of approximately 64.5 to 65.5 Rockwell C. The titanium coating is much harder at approximately 82 Rockwell C.              
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