68331 Type 190-P 135Â degree Split Point Black Oxide HSS Parabolic Flute Drill Bit (12 pack) #77 This is especially important when

This is especially important when using abrasive pads or grinding attachments during operations such as cleaning gasket surfaces or cylinder head porting

ergonomic angle

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Common applications include use in chemical

68331 Type 190-P 135Â degree Split Point Black Oxide HSS Parabolic Flute Drill Bit (12 pack) #77 This is especially important whenParabolic flute drills are designed to allow deep hole drilling without frequent drill removal to clear chips. Parabolic flute drills preform best in low to medium tensile strength materials. Click Here for product catalog Proudly Manufactured in the U. S. A