Bosch 3/16" x 3-1/2" Cobalt Drill Bits (12 pk)

Model CO4139-BNDL

Features

• A tough cobalt alloy delivers heat resistance up to 1100° Fahrenheit allowing the bit to perform for extended periods of time in the most abrasive materials without failing due to the high heat levels. Overall bit hardness of 66-68 HRC from the cobalt formulation gives the ability to penetrate exceptionally tough materials
• 135° split point starts on contact with no walking or skating and no center punch is required

Includes

• 3/16" x 3-1/2" Cobalt Drill Bits (12 pk) - CO4139

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