Bosch CO4155 Cobalt Jobber Drill Bit, 7/16-Inch, 6-Pack
$10.97 or less
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From the Manufacturer Bosch cobalt drill bits offer the best heat resistance and rigid thick web design for drilling in extremely hard and abrasive materials such as treated stainless steel, cast iron and titanium.
- Best heat resistance up to 1100 Degree Fahrenheit
- Ideal for drilling for extended periods of time in the most abrasive materials
- 135 Degree split point starts on contact